20999605

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{2207}}^1$

素因数の和:2396

約数の個数: 16

約数和(自身を含む): 27661824

約数和(自身を除く): 6662219

約数列:

[1, 5, 11, 55, 173, 865, 1903, 2207, 9515, 11035, 24277, 121385, 381811, 1909055, 4199921, 20999605]

約数ペア:

[(1, 20999605), (5, 4199921), (11, 1909055), (55, 381811), (173, 121385), (865, 24277), (1903, 11035), (2207, 9515)]