20458420

素因数分解:

$2^2\times 5^1\times {\mathrm{379}}^1\times {\mathrm{2699}}^1$

素因数の和:3087

約数の個数: 24

約数和(自身を含む): 43092000

約数和(自身を除く): 22633580

約数列:

[1, 2, 4, 5, 10, 20, 379, 758, 1516, 1895, 2699, 3790, 5398, 7580, 10796, 13495, 26990, 53980, 1022921, 2045842, 4091684, 5114605, 10229210, 20458420]

約数ペア:

[(1, 20458420), (2, 10229210), (4, 5114605), (5, 4091684), (10, 2045842), (20, 1022921), (379, 53980), (758, 26990), (1516, 13495), (1895, 10796), (2699, 7580), (3790, 5398)]