21491631

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3833}}^1$

素因数の和:3935

約数の個数: 24

約数和(自身を含む): 35886240

約数和(自身を除く): 14394609

約数列:

[1, 3, 7, 9, 21, 63, 89, 267, 623, 801, 1869, 3833, 5607, 11499, 26831, 34497, 80493, 241479, 341137, 1023411, 2387959, 3070233, 7163877, 21491631]

約数ペア:

[(1, 21491631), (3, 7163877), (7, 3070233), (9, 2387959), (21, 1023411), (63, 341137), (89, 241479), (267, 80493), (623, 34497), (801, 26831), (1869, 11499), (3833, 5607)]