20989869

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{2843}}^1$

素因数の和:2976

約数の個数: 16

約数和(自身を含む): 29486592

約数和(自身を除く): 8496723

約数列:

[1, 3, 23, 69, 107, 321, 2461, 2843, 7383, 8529, 65389, 196167, 304201, 912603, 6996623, 20989869]

約数ペア:

[(1, 20989869), (3, 6996623), (23, 912603), (69, 304201), (107, 196167), (321, 65389), (2461, 8529), (2843, 7383)]