19908005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{1879}}^1$

素因数の和:2060

約数の個数: 16

約数和(自身を含む): 25898880

約数和(自身を除く): 5990875

約数列:

[1, 5, 13, 65, 163, 815, 1879, 2119, 9395, 10595, 24427, 122135, 306277, 1531385, 3981601, 19908005]

約数ペア:

[(1, 19908005), (5, 3981601), (13, 1531385), (65, 306277), (163, 122135), (815, 24427), (1879, 10595), (2119, 9395)]