28017940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32579}}^1$

素因数の和:32631

約数の個数: 24

約数和(自身を含む): 60207840

約数和(自身を除く): 32189900

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 32579, 65158, 130316, 162895, 325790, 651580, 1400897, 2801794, 5603588, 7004485, 14008970, 28017940]

約数ペア:

[(1, 28017940), (2, 14008970), (4, 7004485), (5, 5603588), (10, 2801794), (20, 1400897), (43, 651580), (86, 325790), (172, 162895), (215, 130316), (430, 65158), (860, 32579)]