28745620

素因数分解:

$2^2\times 5^1\times {\mathrm{719}}^1\times {\mathrm{1999}}^1$

素因数の和:2727

約数の個数: 24

約数和(自身を含む): 60480000

約数和(自身を除く): 31734380

約数列:

[1, 2, 4, 5, 10, 20, 719, 1438, 1999, 2876, 3595, 3998, 7190, 7996, 9995, 14380, 19990, 39980, 1437281, 2874562, 5749124, 7186405, 14372810, 28745620]

約数ペア:

[(1, 28745620), (2, 14372810), (4, 7186405), (5, 5749124), (10, 2874562), (20, 1437281), (719, 39980), (1438, 19990), (1999, 14380), (2876, 9995), (3595, 7996), (3998, 7190)]