81214960

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23609}}^1$

素因数の和:23665

約数の個数: 40

約数和(自身を含む): 193224240

約数和(自身を除く): 112009280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 23609, 47218, 94436, 118045, 188872, 236090, 377744, 472180, 944360, 1015187, 1888720, 2030374, 4060748, 5075935, 8121496, 10151870, 16242992, 20303740, 40607480, 81214960]

約数ペア:

[(1, 81214960), (2, 40607480), (4, 20303740), (5, 16242992), (8, 10151870), (10, 8121496), (16, 5075935), (20, 4060748), (40, 2030374), (43, 1888720), (80, 1015187), (86, 944360), (172, 472180), (215, 377744), (344, 236090), (430, 188872), (688, 118045), (860, 94436), (1720, 47218), (3440, 23609)]