20462860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1979}}^1$

素因数の和:2046

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 27437300

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 188, 220, 235, 470, 517, 940, 1034, 1979, 2068, 2585, 3958, 5170, 7916, 9895, 10340, 19790, 21769, 39580, 43538, 87076, 93013, 108845, 186026, 217690, 372052, 435380, 465065, 930130, 1023143, 1860260, 2046286, 4092572, 5115715, 10231430, 20462860]

約数ペア:

[(1, 20462860), (2, 10231430), (4, 5115715), (5, 4092572), (10, 2046286), (11, 1860260), (20, 1023143), (22, 930130), (44, 465065), (47, 435380), (55, 372052), (94, 217690), (110, 186026), (188, 108845), (220, 93013), (235, 87076), (470, 43538), (517, 39580), (940, 21769), (1034, 19790), (1979, 10340), (2068, 9895), (2585, 7916), (3958, 5170)]