19955315

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1\times {\mathrm{313}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 24687936

約数和(自身を除く): 4732621

約数列:

[1, 5, 41, 205, 311, 313, 1555, 1565, 12751, 12833, 63755, 64165, 97343, 486715, 3991063, 19955315]

約数ペア:

[(1, 19955315), (5, 3991063), (41, 486715), (205, 97343), (311, 64165), (313, 63755), (1555, 12833), (1565, 12751)]