20027920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2069}}^1$

素因数の和:2104

約数の個数: 60

約数和(自身を含む): 51207660

約数和(自身を除く): 31179740

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2069, 2420, 4138, 4840, 8276, 9680, 10345, 16552, 20690, 22759, 33104, 41380, 45518, 82760, 91036, 113795, 165520, 182072, 227590, 250349, 364144, 455180, 500698, 910360, 1001396, 1251745, 1820720, 2002792, 2503490, 4005584, 5006980, 10013960, 20027920]

約数ペア:

[(1, 20027920), (2, 10013960), (4, 5006980), (5, 4005584), (8, 2503490), (10, 2002792), (11, 1820720), (16, 1251745), (20, 1001396), (22, 910360), (40, 500698), (44, 455180), (55, 364144), (80, 250349), (88, 227590), (110, 182072), (121, 165520), (176, 113795), (220, 91036), (242, 82760), (440, 45518), (484, 41380), (605, 33104), (880, 22759), (968, 20690), (1210, 16552), (1936, 10345), (2069, 9680), (2420, 8276), (4138, 4840)]