1640226740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2645527}}^1$

素因数の和:2645567

約数の個数: 24

約数和(自身を含む): 3555589632

約数和(自身を除く): 1915362892

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 2645527, 5291054, 10582108, 13227635, 26455270, 52910540, 82011337, 164022674, 328045348, 410056685, 820113370, 1640226740]

約数ペア:

[(1, 1640226740), (2, 820113370), (4, 410056685), (5, 328045348), (10, 164022674), (20, 82011337), (31, 52910540), (62, 26455270), (124, 13227635), (155, 10582108), (310, 5291054), (620, 2645527)]