81498680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{119851}}^1$

素因数の和:119879

約数の個数: 32

約数和(自身を含む): 194160240

約数和(自身を除く): 112661560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 119851, 239702, 479404, 599255, 958808, 1198510, 2037467, 2397020, 4074934, 4794040, 8149868, 10187335, 16299736, 20374670, 40749340, 81498680]

約数ペア:

[(1, 81498680), (2, 40749340), (4, 20374670), (5, 16299736), (8, 10187335), (10, 8149868), (17, 4794040), (20, 4074934), (34, 2397020), (40, 2037467), (68, 1198510), (85, 958808), (136, 599255), (170, 479404), (340, 239702), (680, 119851)]