21038049

素因数分解:

$3^4\times {\mathrm{179}}^1\times {\mathrm{1451}}^1$

素因数の和:1642

約数の個数: 20

約数和(自身を含む): 31624560

約数和(自身を除く): 10586511

約数列:

[1, 3, 9, 27, 81, 179, 537, 1451, 1611, 4353, 4833, 13059, 14499, 39177, 117531, 259729, 779187, 2337561, 7012683, 21038049]

約数ペア:

[(1, 21038049), (3, 7012683), (9, 2337561), (27, 779187), (81, 259729), (179, 117531), (537, 39177), (1451, 14499), (1611, 13059), (4353, 4833)]