19721529

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{15541}}^1$

素因数の和:15597

約数の個数: 16

約数和(自身を含む): 29840640

約数和(自身を除く): 10119111

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 15541, 46623, 139869, 419607, 730427, 2191281, 6573843, 19721529]

約数ペア:

[(1, 19721529), (3, 6573843), (9, 2191281), (27, 730427), (47, 419607), (141, 139869), (423, 46623), (1269, 15541)]