21613780

素因数分解:

$2^2\times 5^1\times {\mathrm{751}}^1\times {\mathrm{1439}}^1$

素因数の和:2199

約数の個数: 24

約数和(自身を含む): 45480960

約数和(自身を除く): 23867180

約数列:

[1, 2, 4, 5, 10, 20, 751, 1439, 1502, 2878, 3004, 3755, 5756, 7195, 7510, 14390, 15020, 28780, 1080689, 2161378, 4322756, 5403445, 10806890, 21613780]

約数ペア:

[(1, 21613780), (2, 10806890), (4, 5403445), (5, 4322756), (10, 2161378), (20, 1080689), (751, 28780), (1439, 15020), (1502, 14390), (2878, 7510), (3004, 7195), (3755, 5756)]