813862220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1312681}}^1$

素因数の和:1312721

約数の個数: 24

約数和(自身を含む): 1764244608

約数和(自身を除く): 950382388

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 1312681, 2625362, 5250724, 6563405, 13126810, 26253620, 40693111, 81386222, 162772444, 203465555, 406931110, 813862220]

約数ペア:

[(1, 813862220), (2, 406931110), (4, 203465555), (5, 162772444), (10, 81386222), (20, 40693111), (31, 26253620), (62, 13126810), (124, 6563405), (155, 5250724), (310, 2625362), (620, 1312681)]