811320220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1308581}}^1$

素因数の和:1308621

約数の個数: 24

約数和(自身を含む): 1758734208

約数和(自身を除く): 947413988

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1308581, 2617162, 5234324, 6542905, 13085810, 26171620, 40566011, 81132022, 162264044, 202830055, 405660110, 811320220]

約数ペア:

[(1, 811320220), (2, 405660110), (4, 202830055), (5, 162264044), (10, 81132022), (20, 40566011), (31, 26171620), (62, 13085810), (124, 6542905), (155, 5234324), (310, 2617162), (620, 1308581)]