19877851

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1949}}^1$

素因数の和:2034

約数の個数: 16

約数和(自身を含む): 23961600

約数和(自身を除く): 4083749

約数列:

[1, 7, 31, 47, 217, 329, 1457, 1949, 10199, 13643, 60419, 91603, 422933, 641221, 2839693, 19877851]

約数ペア:

[(1, 19877851), (7, 2839693), (31, 641221), (47, 422933), (217, 91603), (329, 60419), (1457, 13643), (1949, 10199)]