20506978

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{1213}}^1$

素因数の和:1401

約数の個数: 16

約数和(自身を含む): 31466880

約数和(自身を除く): 10959902

約数列:

[1, 2, 79, 107, 158, 214, 1213, 2426, 8453, 16906, 95827, 129791, 191654, 259582, 10253489, 20506978]

約数ペア:

[(1, 20506978), (2, 10253489), (79, 259582), (107, 191654), (158, 129791), (214, 95827), (1213, 16906), (2426, 8453)]