21065859

素因数分解:

$3^3\times {\mathrm{151}}^1\times {\mathrm{5167}}^1$

素因数の和:5327

約数の個数: 16

約数和(自身を含む): 31421440

約数和(自身を除く): 10355581

約数列:

[1, 3, 9, 27, 151, 453, 1359, 4077, 5167, 15501, 46503, 139509, 780217, 2340651, 7021953, 21065859]

約数ペア:

[(1, 21065859), (3, 7021953), (9, 2340651), (27, 780217), (151, 139509), (453, 46503), (1359, 15501), (4077, 5167)]