21331593

素因数分解:

$3^4\times {\mathrm{389}}^1\times {\mathrm{677}}^1$

素因数の和:1078

約数の個数: 20

約数和(自身を含む): 31994820

約数和(自身を除く): 10663227

約数列:

[1, 3, 9, 27, 81, 389, 677, 1167, 2031, 3501, 6093, 10503, 18279, 31509, 54837, 263353, 790059, 2370177, 7110531, 21331593]

約数ペア:

[(1, 21331593), (3, 7110531), (9, 2370177), (27, 790059), (81, 263353), (389, 54837), (677, 31509), (1167, 18279), (2031, 10503), (3501, 6093)]