20940176

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{233}}^1$

素因数の和:419

約数の個数: 40

約数和(自身を含む): 42044184

約数和(自身を除く): 21104008

約数列:

[1, 2, 4, 8, 16, 41, 82, 137, 164, 233, 274, 328, 466, 548, 656, 932, 1096, 1864, 2192, 3728, 5617, 9553, 11234, 19106, 22468, 31921, 38212, 44936, 63842, 76424, 89872, 127684, 152848, 255368, 510736, 1308761, 2617522, 5235044, 10470088, 20940176]

約数ペア:

[(1, 20940176), (2, 10470088), (4, 5235044), (8, 2617522), (16, 1308761), (41, 510736), (82, 255368), (137, 152848), (164, 127684), (233, 89872), (274, 76424), (328, 63842), (466, 44936), (548, 38212), (656, 31921), (932, 22468), (1096, 19106), (1864, 11234), (2192, 9553), (3728, 5617)]