20775920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23609}}^1$

素因数の和:23633

約数の個数: 40

約数和(自身を含む): 52697520

約数和(自身を除く): 31921600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23609, 47218, 94436, 118045, 188872, 236090, 259699, 377744, 472180, 519398, 944360, 1038796, 1298495, 1888720, 2077592, 2596990, 4155184, 5193980, 10387960, 20775920]

約数ペア:

[(1, 20775920), (2, 10387960), (4, 5193980), (5, 4155184), (8, 2596990), (10, 2077592), (11, 1888720), (16, 1298495), (20, 1038796), (22, 944360), (40, 519398), (44, 472180), (55, 377744), (80, 259699), (88, 236090), (110, 188872), (176, 118045), (220, 94436), (440, 47218), (880, 23609)]