393875643

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{24077}}^1$

素因数の和:24147

約数の個数: 32

約数和(自身を含む): 647216640

約数和(自身を除く): 253340997

約数列:

[1, 3, 7, 19, 21, 41, 57, 123, 133, 287, 399, 779, 861, 2337, 5453, 16359, 24077, 72231, 168539, 457463, 505617, 987157, 1372389, 2961471, 3202241, 6910099, 9606723, 18755983, 20730297, 56267949, 131291881, 393875643]

約数ペア:

[(1, 393875643), (3, 131291881), (7, 56267949), (19, 20730297), (21, 18755983), (41, 9606723), (57, 6910099), (123, 3202241), (133, 2961471), (287, 1372389), (399, 987157), (779, 505617), (861, 457463), (2337, 168539), (5453, 72231), (16359, 24077)]