20542020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1979}}^1$

素因数の和:2164

約数の個数: 48

約数和(自身を含む): 57879360

約数和(自身を除く): 37337340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 173, 346, 519, 692, 865, 1038, 1730, 1979, 2076, 2595, 3460, 3958, 5190, 5937, 7916, 9895, 10380, 11874, 19790, 23748, 29685, 39580, 59370, 118740, 342367, 684734, 1027101, 1369468, 1711835, 2054202, 3423670, 4108404, 5135505, 6847340, 10271010, 20542020]

約数ペア:

[(1, 20542020), (2, 10271010), (3, 6847340), (4, 5135505), (5, 4108404), (6, 3423670), (10, 2054202), (12, 1711835), (15, 1369468), (20, 1027101), (30, 684734), (60, 342367), (173, 118740), (346, 59370), (519, 39580), (692, 29685), (865, 23748), (1038, 19790), (1730, 11874), (1979, 10380), (2076, 9895), (2595, 7916), (3460, 5937), (3958, 5190)]