209320420

素因数分解:

$2^2\times 5^1\times {\mathrm{2851}}^1\times {\mathrm{3671}}^1$

素因数の和:6531

約数の個数: 24

約数和(自身を含む): 439846848

約数和(自身を除く): 230526428

約数列:

[1, 2, 4, 5, 10, 20, 2851, 3671, 5702, 7342, 11404, 14255, 14684, 18355, 28510, 36710, 57020, 73420, 10466021, 20932042, 41864084, 52330105, 104660210, 209320420]

約数ペア:

[(1, 209320420), (2, 104660210), (4, 52330105), (5, 41864084), (10, 20932042), (20, 10466021), (2851, 73420), (3671, 57020), (5702, 36710), (7342, 28510), (11404, 18355), (14255, 14684)]