21004570

素因数分解:

$2^1\times 5^1\times {\mathrm{1291}}^1\times {\mathrm{1627}}^1$

素因数の和:2925

約数の個数: 16

約数和(自身を含む): 37860768

約数和(自身を除く): 16856198

約数列:

[1, 2, 5, 10, 1291, 1627, 2582, 3254, 6455, 8135, 12910, 16270, 2100457, 4200914, 10502285, 21004570]

約数ペア:

[(1, 21004570), (2, 10502285), (5, 4200914), (10, 2100457), (1291, 16270), (1627, 12910), (2582, 8135), (3254, 6455)]