21689889

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{11833}}^1$

素因数の和:11896

約数の個数: 16

約数和(自身を含む): 31809792

約数和(自身を除く): 10119903

約数列:

[1, 3, 13, 39, 47, 141, 611, 1833, 11833, 35499, 153829, 461487, 556151, 1668453, 7229963, 21689889]

約数ペア:

[(1, 21689889), (3, 7229963), (13, 1668453), (39, 556151), (47, 461487), (141, 153829), (611, 35499), (1833, 11833)]