21002644

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31069}}^1$

素因数の和:31099

約数の個数: 18

約数和(自身を含む): 39800670

約数和(自身を除く): 18798026

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31069, 62138, 124276, 403897, 807794, 1615588, 5250661, 10501322, 21002644]

約数ペア:

[(1, 21002644), (2, 10501322), (4, 5250661), (13, 1615588), (26, 807794), (52, 403897), (169, 124276), (338, 62138), (676, 31069)]