27988940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199921}}^1$

素因数の和:199937

約数の個数: 24

約数和(自身を含む): 67173792

約数和(自身を除く): 39184852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199921, 399842, 799684, 999605, 1399447, 1999210, 2798894, 3998420, 5597788, 6997235, 13994470, 27988940]

約数ペア:

[(1, 27988940), (2, 13994470), (4, 6997235), (5, 5597788), (7, 3998420), (10, 2798894), (14, 1999210), (20, 1399447), (28, 999605), (35, 799684), (70, 399842), (140, 199921)]