128668825

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{607}}^1$

素因数の和:817

約数の個数: 24

約数和(自身を含む): 163600640

約数和(自身を除く): 34931815

約数列:

[1, 5, 25, 61, 139, 305, 607, 695, 1525, 3035, 3475, 8479, 15175, 37027, 42395, 84373, 185135, 211975, 421865, 925675, 2109325, 5146753, 25733765, 128668825]

約数ペア:

[(1, 128668825), (5, 25733765), (25, 5146753), (61, 2109325), (139, 925675), (305, 421865), (607, 211975), (695, 185135), (1525, 84373), (3035, 42395), (3475, 37027), (8479, 15175)]