18215931

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 26707968

約数和(自身を除く): 8492037

約数列:

[1, 3, 23, 41, 47, 69, 123, 137, 141, 411, 943, 1081, 1927, 2829, 3151, 3243, 5617, 5781, 6439, 9453, 16851, 19317, 44321, 129191, 132963, 148097, 263999, 387573, 444291, 791997, 6071977, 18215931]

約数ペア:

[(1, 18215931), (3, 6071977), (23, 791997), (41, 444291), (47, 387573), (69, 263999), (123, 148097), (137, 132963), (141, 129191), (411, 44321), (943, 19317), (1081, 16851), (1927, 9453), (2829, 6439), (3151, 5781), (3243, 5617)]