21991607

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{757}}^1$

素因数の和:926

約数の個数: 16

約数和(自身を含む): 25468800

約数和(自身を除く): 3477193

約数列:

[1, 11, 19, 139, 209, 757, 1529, 2641, 8327, 14383, 29051, 105223, 158213, 1157453, 1999237, 21991607]

約数ペア:

[(1, 21991607), (11, 1999237), (19, 1157453), (139, 158213), (209, 105223), (757, 29051), (1529, 14383), (2641, 8327)]