21991425

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{10111}}^1$

素因数の和:10153

約数の個数: 24

約数和(自身を含む): 37616640

約数和(自身を除く): 15625215

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 435, 725, 2175, 10111, 30333, 50555, 151665, 252775, 293219, 758325, 879657, 1466095, 4398285, 7330475, 21991425]

約数ペア:

[(1, 21991425), (3, 7330475), (5, 4398285), (15, 1466095), (25, 879657), (29, 758325), (75, 293219), (87, 252775), (145, 151665), (435, 50555), (725, 30333), (2175, 10111)]