81800180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53117}}^1$

素因数の和:53144

約数の個数: 48

約数和(自身を含む): 214171776

約数和(自身を除く): 132371596

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 53117, 106234, 212468, 265585, 371819, 531170, 584287, 743638, 1062340, 1168574, 1487276, 1859095, 2337148, 2921435, 3718190, 4090009, 5842870, 7436380, 8180018, 11685740, 16360036, 20450045, 40900090, 81800180]

約数ペア:

[(1, 81800180), (2, 40900090), (4, 20450045), (5, 16360036), (7, 11685740), (10, 8180018), (11, 7436380), (14, 5842870), (20, 4090009), (22, 3718190), (28, 2921435), (35, 2337148), (44, 1859095), (55, 1487276), (70, 1168574), (77, 1062340), (110, 743638), (140, 584287), (154, 531170), (220, 371819), (308, 265585), (385, 212468), (770, 106234), (1540, 53117)]