1286351984

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{71719}}^1$

素因数の和:71805

約数の個数: 40

約数和(自身を含む): 2667984000

約数和(自身を除く): 1381632016

約数列:

[1, 2, 4, 8, 16, 19, 38, 59, 76, 118, 152, 236, 304, 472, 944, 1121, 2242, 4484, 8968, 17936, 71719, 143438, 286876, 573752, 1147504, 1362661, 2725322, 4231421, 5450644, 8462842, 10901288, 16925684, 21802576, 33851368, 67702736, 80396999, 160793998, 321587996, 643175992, 1286351984]

約数ペア:

[(1, 1286351984), (2, 643175992), (4, 321587996), (8, 160793998), (16, 80396999), (19, 67702736), (38, 33851368), (59, 21802576), (76, 16925684), (118, 10901288), (152, 8462842), (236, 5450644), (304, 4231421), (472, 2725322), (944, 1362661), (1121, 1147504), (2242, 573752), (4484, 286876), (8968, 143438), (17936, 71719)]