Riddle: I am a sequence of numbers where the next number is the…

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i-am-a-number-that-is-the-product-of-my-factors-sum-and

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i-have-keys-but-open-no-locks-i-have-spaces-but-no-room

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i-am-full-of-numbers-but-cant-count-a-thing-what-am-i

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what-always-increases-but-never-decreases-yet-you-can

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i-start-with-a-bang-im-never-the-same-predict-my-next