128260405

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{2791}}^1$

素因数の和:2917

約数の個数: 32

約数和(自身を含む): 191374848

約数和(自身を除く): 63114443

約数列:

[1, 5, 7, 13, 35, 65, 91, 101, 455, 505, 707, 1313, 2791, 3535, 6565, 9191, 13955, 19537, 36283, 45955, 97685, 181415, 253981, 281891, 1269905, 1409455, 1973237, 3664583, 9866185, 18322915, 25652081, 128260405]

約数ペア:

[(1, 128260405), (5, 25652081), (7, 18322915), (13, 9866185), (35, 3664583), (65, 1973237), (91, 1409455), (101, 1269905), (455, 281891), (505, 253981), (707, 181415), (1313, 97685), (2791, 45955), (3535, 36283), (6565, 19537), (9191, 13955)]