20475620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8461}}^1$

素因数の和:8492

約数の個数: 36

約数和(自身を含む): 47268732

約数和(自身を除く): 26793112

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8461, 16922, 33844, 42305, 84610, 93071, 169220, 186142, 372284, 465355, 930710, 1023781, 1861420, 2047562, 4095124, 5118905, 10237810, 20475620]

約数ペア:

[(1, 20475620), (2, 10237810), (4, 5118905), (5, 4095124), (10, 2047562), (11, 1861420), (20, 1023781), (22, 930710), (44, 465355), (55, 372284), (110, 186142), (121, 169220), (220, 93071), (242, 84610), (484, 42305), (605, 33844), (1210, 16922), (2420, 8461)]