21291258281

素因数分解:

${\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{74279}}^1$

素因数の和:74504

約数の個数: 16

約数和(自身を含む): 22400471040

約数和(自身を除く): 1109212759

約数列:

[1, 37, 61, 127, 2257, 4699, 7747, 74279, 286639, 2748323, 4531019, 9433433, 167647703, 349037021, 575439413, 21291258281]

約数ペア:

[(1, 21291258281), (37, 575439413), (61, 349037021), (127, 167647703), (2257, 9433433), (4699, 4531019), (7747, 2748323), (74279, 286639)]