19889215

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{1879}}^1$

素因数の和:1986

約数の個数: 16

約数和(自身を含む): 25041600

約数和(自身を除く): 5152385

約数列:

[1, 5, 29, 73, 145, 365, 1879, 2117, 9395, 10585, 54491, 137167, 272455, 685835, 3977843, 19889215]

約数ペア:

[(1, 19889215), (5, 3977843), (29, 685835), (73, 272455), (145, 137167), (365, 54491), (1879, 10585), (2117, 9395)]