90128605

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{1087}}^1$

素因数の和:1225

約数の個数: 32

約数和(自身を含む): 130351104

約数和(自身を除く): 40222499

約数列:

[1, 5, 7, 23, 35, 103, 115, 161, 515, 721, 805, 1087, 2369, 3605, 5435, 7609, 11845, 16583, 25001, 38045, 82915, 111961, 125005, 175007, 559805, 783727, 875035, 2575103, 3918635, 12875515, 18025721, 90128605]

約数ペア:

[(1, 90128605), (5, 18025721), (7, 12875515), (23, 3918635), (35, 2575103), (103, 875035), (115, 783727), (161, 559805), (515, 175007), (721, 125005), (805, 111961), (1087, 82915), (2369, 38045), (3605, 25001), (5435, 16583), (7609, 11845)]