20605580

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12413}}^1$

素因数の和:12505

約数の個数: 24

約数和(自身を含む): 43796592

約数和(自身を除く): 23191012

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12413, 24826, 49652, 62065, 124130, 248260, 1030279, 2060558, 4121116, 5151395, 10302790, 20605580]

約数ペア:

[(1, 20605580), (2, 10302790), (4, 5151395), (5, 4121116), (10, 2060558), (20, 1030279), (83, 248260), (166, 124130), (332, 62065), (415, 49652), (830, 24826), (1660, 12413)]