20148040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1579}}^1$

素因数の和:1630

約数の個数: 64

約数和(自身を含む): 51192000

約数和(自身を除く): 31043960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1579, 1595, 2552, 3158, 3190, 6316, 6380, 7895, 12632, 12760, 15790, 17369, 31580, 34738, 45791, 63160, 69476, 86845, 91582, 138952, 173690, 183164, 228955, 347380, 366328, 457910, 503701, 694760, 915820, 1007402, 1831640, 2014804, 2518505, 4029608, 5037010, 10074020, 20148040]

約数ペア:

[(1, 20148040), (2, 10074020), (4, 5037010), (5, 4029608), (8, 2518505), (10, 2014804), (11, 1831640), (20, 1007402), (22, 915820), (29, 694760), (40, 503701), (44, 457910), (55, 366328), (58, 347380), (88, 228955), (110, 183164), (116, 173690), (145, 138952), (220, 91582), (232, 86845), (290, 69476), (319, 63160), (440, 45791), (580, 34738), (638, 31580), (1160, 17369), (1276, 15790), (1579, 12760), (1595, 12632), (2552, 7895), (3158, 6380), (3190, 6316)]