21058220

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{3181}}^1$

素因数の和:3521

約数の個数: 24

約数和(自身を含む): 44369808

約数和(自身を除く): 23311588

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3181, 3310, 6362, 6620, 12724, 15905, 31810, 63620, 1052911, 2105822, 4211644, 5264555, 10529110, 21058220]

約数ペア:

[(1, 21058220), (2, 10529110), (4, 5264555), (5, 4211644), (10, 2105822), (20, 1052911), (331, 63620), (662, 31810), (1324, 15905), (1655, 12724), (3181, 6620), (3310, 6362)]