19888450

素因数分解:

$2^1\times 5^2\times {\mathrm{311}}^1\times {\mathrm{1279}}^1$

素因数の和:1602

約数の個数: 24

約数和(自身を含む): 37140480

約数和(自身を除く): 17252030

約数列:

[1, 2, 5, 10, 25, 50, 311, 622, 1279, 1555, 2558, 3110, 6395, 7775, 12790, 15550, 31975, 63950, 397769, 795538, 1988845, 3977690, 9944225, 19888450]

約数ペア:

[(1, 19888450), (2, 9944225), (5, 3977690), (10, 1988845), (25, 795538), (50, 397769), (311, 63950), (622, 31975), (1279, 15550), (1555, 12790), (2558, 7775), (3110, 6395)]