13318220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21481}}^1$

素因数の和:21521

約数の個数: 24

約数和(自身を含む): 28871808

約数和(自身を除く): 15553588

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 21481, 42962, 85924, 107405, 214810, 429620, 665911, 1331822, 2663644, 3329555, 6659110, 13318220]

約数ペア:

[(1, 13318220), (2, 6659110), (4, 3329555), (5, 2663644), (10, 1331822), (20, 665911), (31, 429620), (62, 214810), (124, 107405), (155, 85924), (310, 42962), (620, 21481)]