20408060

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{10103}}^1$

素因数の和:10213

約数の個数: 24

約数和(自身を含む): 43285536

約数和(自身を除く): 22877476

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 10103, 20206, 40412, 50515, 101030, 202060, 1020403, 2040806, 4081612, 5102015, 10204030, 20408060]

約数ペア:

[(1, 20408060), (2, 10204030), (4, 5102015), (5, 4081612), (10, 2040806), (20, 1020403), (101, 202060), (202, 101030), (404, 50515), (505, 40412), (1010, 20206), (2020, 10103)]