21790220

素因数分解:

$2^2\times 5^1\times {\mathrm{467}}^1\times {\mathrm{2333}}^1$

素因数の和:2809

約数の個数: 24

約数和(自身を含む): 45877104

約数和(自身を除く): 24086884

約数列:

[1, 2, 4, 5, 10, 20, 467, 934, 1868, 2333, 2335, 4666, 4670, 9332, 9340, 11665, 23330, 46660, 1089511, 2179022, 4358044, 5447555, 10895110, 21790220]

約数ペア:

[(1, 21790220), (2, 10895110), (4, 5447555), (5, 4358044), (10, 2179022), (20, 1089511), (467, 46660), (934, 23330), (1868, 11665), (2333, 9340), (2335, 9332), (4666, 4670)]