21287734

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{617}}^1\times {\mathrm{1327}}^1$

素因数の和:1959

約数の個数: 16

約数和(自身を含む): 34469568

約数和(自身を除く): 13181834

約数列:

[1, 2, 13, 26, 617, 1234, 1327, 2654, 8021, 16042, 17251, 34502, 818759, 1637518, 10643867, 21287734]

約数ペア:

[(1, 21287734), (2, 10643867), (13, 1637518), (26, 818759), (617, 34502), (1234, 17251), (1327, 16042), (2654, 8021)]