12921036220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20840381}}^1$

素因数の和:20840421

約数の個数: 24

約数和(自身を含む): 28009473408

約数和(自身を除く): 15088437188

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 20840381, 41680762, 83361524, 104201905, 208403810, 416807620, 646051811, 1292103622, 2584207244, 3230259055, 6460518110, 12921036220]

約数ペア:

[(1, 12921036220), (2, 6460518110), (4, 3230259055), (5, 2584207244), (10, 1292103622), (20, 646051811), (31, 416807620), (62, 208403810), (124, 104201905), (155, 83361524), (310, 41680762), (620, 20840381)]