90989680

素因数分解:

$2^4\times 5^1\times {\mathrm{881}}^1\times {\mathrm{1291}}^1$

素因数の和:2185

約数の個数: 40

約数和(自身を含む): 211955184

約数和(自身を除く): 120965504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 881, 1291, 1762, 2582, 3524, 4405, 5164, 6455, 7048, 8810, 10328, 12910, 14096, 17620, 20656, 25820, 35240, 51640, 70480, 103280, 1137371, 2274742, 4549484, 5686855, 9098968, 11373710, 18197936, 22747420, 45494840, 90989680]

約数ペア:

[(1, 90989680), (2, 45494840), (4, 22747420), (5, 18197936), (8, 11373710), (10, 9098968), (16, 5686855), (20, 4549484), (40, 2274742), (80, 1137371), (881, 103280), (1291, 70480), (1762, 51640), (2582, 35240), (3524, 25820), (4405, 20656), (5164, 17620), (6455, 14096), (7048, 12910), (8810, 10328)]