28716860

素因数分解:

$2^2\times 5^1\times {\mathrm{719}}^1\times {\mathrm{1997}}^1$

素因数の和:2725

約数の個数: 24

約数和(自身を含む): 60419520

約数和(自身を除く): 31702660

約数列:

[1, 2, 4, 5, 10, 20, 719, 1438, 1997, 2876, 3595, 3994, 7190, 7988, 9985, 14380, 19970, 39940, 1435843, 2871686, 5743372, 7179215, 14358430, 28716860]

約数ペア:

[(1, 28716860), (2, 14358430), (4, 7179215), (5, 5743372), (10, 2871686), (20, 1435843), (719, 39940), (1438, 19970), (1997, 14380), (2876, 9985), (3595, 7988), (3994, 7190)]