18722020

素因数分解:

$2^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{2953}}^1$

素因数の和:3279

約数の個数: 24

約数和(自身を含む): 39453624

約数和(自身を除く): 20731604

約数列:

[1, 2, 4, 5, 10, 20, 317, 634, 1268, 1585, 2953, 3170, 5906, 6340, 11812, 14765, 29530, 59060, 936101, 1872202, 3744404, 4680505, 9361010, 18722020]

約数ペア:

[(1, 18722020), (2, 9361010), (4, 4680505), (5, 3744404), (10, 1872202), (20, 936101), (317, 59060), (634, 29530), (1268, 14765), (1585, 11812), (2953, 6340), (3170, 5906)]