20520980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{35381}}^1$

素因数の和:35419

約数の個数: 24

約数和(自身を含む): 44581320

約数和(自身を除く): 24060340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 35381, 70762, 141524, 176905, 353810, 707620, 1026049, 2052098, 4104196, 5130245, 10260490, 20520980]

約数ペア:

[(1, 20520980), (2, 10260490), (4, 5130245), (5, 4104196), (10, 2052098), (20, 1026049), (29, 707620), (58, 353810), (116, 176905), (145, 141524), (290, 70762), (580, 35381)]