21451912

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{141131}}^1$

素因数の和:141156

約数の個数: 16

約数和(自身を含む): 42339600

約数和(自身を除く): 20887688

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 141131, 282262, 564524, 1129048, 2681489, 5362978, 10725956, 21451912]

約数ペア:

[(1, 21451912), (2, 10725956), (4, 5362978), (8, 2681489), (19, 1129048), (38, 564524), (76, 282262), (152, 141131)]