20749790

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71551}}^1$

素因数の和:71587

約数の個数: 16

約数和(自身を含む): 38638080

約数和(自身を除く): 17888290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 71551, 143102, 357755, 715510, 2074979, 4149958, 10374895, 20749790]

約数ペア:

[(1, 20749790), (2, 10374895), (5, 4149958), (10, 2074979), (29, 715510), (58, 357755), (145, 143102), (290, 71551)]