21533188

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{821}}^1$

素因数の和:987

約数の個数: 24

約数和(自身を含む): 38666880

約数和(自身を除く): 17133692

約数列:

[1, 2, 4, 79, 83, 158, 166, 316, 332, 821, 1642, 3284, 6557, 13114, 26228, 64859, 68143, 129718, 136286, 259436, 272572, 5383297, 10766594, 21533188]

約数ペア:

[(1, 21533188), (2, 10766594), (4, 5383297), (79, 272572), (83, 259436), (158, 136286), (166, 129718), (316, 68143), (332, 64859), (821, 26228), (1642, 13114), (3284, 6557)]