21836205

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3491}}^1$

素因数の和:3641

約数の個数: 24

約数和(自身を含む): 38132640

約数和(自身を除く): 16296435

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 3491, 6255, 10473, 17455, 31419, 52365, 157095, 485249, 1455747, 2426245, 4367241, 7278735, 21836205]

約数ペア:

[(1, 21836205), (3, 7278735), (5, 4367241), (9, 2426245), (15, 1455747), (45, 485249), (139, 157095), (417, 52365), (695, 31419), (1251, 17455), (2085, 10473), (3491, 6255)]