19896205

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^2\times {\mathrm{281}}^1$

素因数の和:334

約数の個数: 36

約数和(自身を含む): 29608308

約数和(自身を除く): 9712103

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 245, 281, 289, 595, 833, 1405, 1445, 1967, 2023, 4165, 4777, 9835, 10115, 13769, 14161, 23885, 33439, 68845, 70805, 81209, 167195, 234073, 406045, 568463, 1170365, 2842315, 3979241, 19896205]

約数ペア:

[(1, 19896205), (5, 3979241), (7, 2842315), (17, 1170365), (35, 568463), (49, 406045), (85, 234073), (119, 167195), (245, 81209), (281, 70805), (289, 68845), (595, 33439), (833, 23885), (1405, 14161), (1445, 13769), (1967, 10115), (2023, 9835), (4165, 4777)]