858882020

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{123049}}^1$

素因数の和:123407

約数の個数: 24

約数和(自身を含む): 1808835000

約数和(自身を除く): 949952980

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 3490, 6980, 123049, 246098, 492196, 615245, 1230490, 2460980, 42944101, 85888202, 171776404, 214720505, 429441010, 858882020]

約数ペア:

[(1, 858882020), (2, 429441010), (4, 214720505), (5, 171776404), (10, 85888202), (20, 42944101), (349, 2460980), (698, 1230490), (1396, 615245), (1745, 492196), (3490, 246098), (6980, 123049)]