19991740

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12653}}^1$

素因数の和:12741

約数の個数: 24

約数和(自身を含む): 42517440

約数和(自身を除く): 22525700

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12653, 25306, 50612, 63265, 126530, 253060, 999587, 1999174, 3998348, 4997935, 9995870, 19991740]

約数ペア:

[(1, 19991740), (2, 9995870), (4, 4997935), (5, 3998348), (10, 1999174), (20, 999587), (79, 253060), (158, 126530), (316, 63265), (395, 50612), (790, 25306), (1580, 12653)]