21921855

素因数分解:

$3^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{3299}}^1$

素因数の和:3750

約数の個数: 16

約数和(自身を含む): 35164800

約数和(自身を除く): 13242945

約数列:

[1, 3, 5, 15, 443, 1329, 2215, 3299, 6645, 9897, 16495, 49485, 1461457, 4384371, 7307285, 21921855]

約数ペア:

[(1, 21921855), (3, 7307285), (5, 4384371), (15, 1461457), (443, 49485), (1329, 16495), (2215, 9897), (3299, 6645)]