20708420

素因数分解:

$2^2\times 5^1\times {\mathrm{829}}^1\times {\mathrm{1249}}^1$

素因数の和:2087

約数の個数: 24

約数和(自身を含む): 43575000

約数和(自身を除く): 22866580

約数列:

[1, 2, 4, 5, 10, 20, 829, 1249, 1658, 2498, 3316, 4145, 4996, 6245, 8290, 12490, 16580, 24980, 1035421, 2070842, 4141684, 5177105, 10354210, 20708420]

約数ペア:

[(1, 20708420), (2, 10354210), (4, 5177105), (5, 4141684), (10, 2070842), (20, 1035421), (829, 24980), (1249, 16580), (1658, 12490), (2498, 8290), (3316, 6245), (4145, 4996)]