21836900

素因数分解:

$2^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{1571}}^1$

素因数の和:1724

約数の個数: 36

約数和(自身を含む): 47757360

約数和(自身を除く): 25920460

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 139, 278, 556, 695, 1390, 1571, 2780, 3142, 3475, 6284, 6950, 7855, 13900, 15710, 31420, 39275, 78550, 157100, 218369, 436738, 873476, 1091845, 2183690, 4367380, 5459225, 10918450, 21836900]

約数ペア:

[(1, 21836900), (2, 10918450), (4, 5459225), (5, 4367380), (10, 2183690), (20, 1091845), (25, 873476), (50, 436738), (100, 218369), (139, 157100), (278, 78550), (556, 39275), (695, 31420), (1390, 15710), (1571, 13900), (2780, 7855), (3142, 6950), (3475, 6284)]