19947788

素因数分解:

$2^2\times 7^1\times {\mathrm{691}}^1\times {\mathrm{1031}}^1$

素因数の和:1733

約数の個数: 24

約数和(自身を含む): 39992064

約数和(自身を除く): 20044276

約数列:

[1, 2, 4, 7, 14, 28, 691, 1031, 1382, 2062, 2764, 4124, 4837, 7217, 9674, 14434, 19348, 28868, 712421, 1424842, 2849684, 4986947, 9973894, 19947788]

約数ペア:

[(1, 19947788), (2, 9973894), (4, 4986947), (7, 2849684), (14, 1424842), (28, 712421), (691, 28868), (1031, 19348), (1382, 14434), (2062, 9674), (2764, 7217), (4124, 4837)]