2018131775

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{21521}}^1$

素因数の和:21584

約数の個数: 36

約数和(自身を含む): 2839526592

約数和(自身を除く): 821394817

約数列:

[1, 5, 11, 25, 31, 55, 121, 155, 275, 341, 605, 775, 1705, 3025, 3751, 8525, 18755, 21521, 93775, 107605, 236731, 538025, 667151, 1183655, 2604041, 3335755, 5918275, 7338661, 13020205, 16678775, 36693305, 65101025, 80725271, 183466525, 403626355, 2018131775]

約数ペア:

[(1, 2018131775), (5, 403626355), (11, 183466525), (25, 80725271), (31, 65101025), (55, 36693305), (121, 16678775), (155, 13020205), (275, 7338661), (341, 5918275), (605, 3335755), (775, 2604041), (1705, 1183655), (3025, 667151), (3751, 538025), (8525, 236731), (18755, 107605), (21521, 93775)]