20010980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8269}}^1$

素因数の和:8300

約数の個数: 36

約数和(自身を含む): 46196220

約数和(自身を除く): 26185240

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8269, 16538, 33076, 41345, 82690, 90959, 165380, 181918, 363836, 454795, 909590, 1000549, 1819180, 2001098, 4002196, 5002745, 10005490, 20010980]

約数ペア:

[(1, 20010980), (2, 10005490), (4, 5002745), (5, 4002196), (10, 2001098), (11, 1819180), (20, 1000549), (22, 909590), (44, 454795), (55, 363836), (110, 181918), (121, 165380), (220, 90959), (242, 82690), (484, 41345), (605, 33076), (1210, 16538), (2420, 8269)]