81587080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{119981}}^1$

素因数の和:120009

約数の個数: 32

約数和(自身を含む): 194370840

約数和(自身を除く): 112783760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 119981, 239962, 479924, 599905, 959848, 1199810, 2039677, 2399620, 4079354, 4799240, 8158708, 10198385, 16317416, 20396770, 40793540, 81587080]

約数ペア:

[(1, 81587080), (2, 40793540), (4, 20396770), (5, 16317416), (8, 10198385), (10, 8158708), (17, 4799240), (20, 4079354), (34, 2399620), (40, 2039677), (68, 1199810), (85, 959848), (136, 599905), (170, 479924), (340, 239962), (680, 119981)]