287487879

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31327}}^1$

素因数の和:31379

約数の個数: 32

約数和(自身を含む): 481198080

約数和(自身を除く): 193710201

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 399, 437, 483, 1311, 3059, 9177, 31327, 93981, 219289, 595213, 657867, 720521, 1785639, 2161563, 4166491, 5043647, 12499473, 13689899, 15130941, 41069697, 95829293, 287487879]

約数ペア:

[(1, 287487879), (3, 95829293), (7, 41069697), (19, 15130941), (21, 13689899), (23, 12499473), (57, 5043647), (69, 4166491), (133, 2161563), (161, 1785639), (399, 720521), (437, 657867), (483, 595213), (1311, 219289), (3059, 93981), (9177, 31327)]