291257620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{205111}}^1$

素因数の和:205191

約数の個数: 24

約数和(自身を含む): 620258688

約数和(自身を除く): 329001068

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 205111, 410222, 820444, 1025555, 2051110, 4102220, 14562881, 29125762, 58251524, 72814405, 145628810, 291257620]

約数ペア:

[(1, 291257620), (2, 145628810), (4, 72814405), (5, 58251524), (10, 29125762), (20, 14562881), (71, 4102220), (142, 2051110), (284, 1025555), (355, 820444), (710, 410222), (1420, 205111)]