21456831

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{3989}}^1$

素因数の和:4166

約数の個数: 16

約数和(自身を含む): 31409280

約数和(自身を除く): 9952449

約数列:

[1, 3, 11, 33, 163, 489, 1793, 3989, 5379, 11967, 43879, 131637, 650207, 1950621, 7152277, 21456831]

約数ペア:

[(1, 21456831), (3, 7152277), (11, 1950621), (33, 650207), (163, 131637), (489, 43879), (1793, 11967), (3989, 5379)]