19996165

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{4801}}^1$

素因数の和:4837

約数の個数: 24

約数和(自身を含む): 29561112

約数和(自身を除く): 9564947

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 245, 595, 833, 4165, 4801, 24005, 33607, 81617, 168035, 235249, 408085, 571319, 1176245, 2856595, 3999233, 19996165]

約数ペア:

[(1, 19996165), (5, 3999233), (7, 2856595), (17, 1176245), (35, 571319), (49, 408085), (85, 235249), (119, 168035), (245, 81617), (595, 33607), (833, 24005), (4165, 4801)]