81234040

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19717}}^1$

素因数の和:19831

約数の個数: 32

約数和(自身を含む): 184560480

約数和(自身を除く): 103326440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 19717, 39434, 78868, 98585, 157736, 197170, 394340, 788680, 2030851, 4061702, 8123404, 10154255, 16246808, 20308510, 40617020, 81234040]

約数ペア:

[(1, 81234040), (2, 40617020), (4, 20308510), (5, 16246808), (8, 10154255), (10, 8123404), (20, 4061702), (40, 2030851), (103, 788680), (206, 394340), (412, 197170), (515, 157736), (824, 98585), (1030, 78868), (2060, 39434), (4120, 19717)]