20298680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29851}}^1$

素因数の和:29879

約数の個数: 32

約数和(自身を含む): 48360240

約数和(自身を除く): 28061560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 29851, 59702, 119404, 149255, 238808, 298510, 507467, 597020, 1014934, 1194040, 2029868, 2537335, 4059736, 5074670, 10149340, 20298680]

約数ペア:

[(1, 20298680), (2, 10149340), (4, 5074670), (5, 4059736), (8, 2537335), (10, 2029868), (17, 1194040), (20, 1014934), (34, 597020), (40, 507467), (68, 298510), (85, 238808), (136, 149255), (170, 119404), (340, 59702), (680, 29851)]