19934990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{439}}^1$

素因数の和:704

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 18081010

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 239, 439, 478, 878, 1195, 2195, 2390, 4390, 4541, 8341, 9082, 16682, 22705, 41705, 45410, 83410, 104921, 209842, 524605, 1049210, 1993499, 3986998, 9967495, 19934990]

約数ペア:

[(1, 19934990), (2, 9967495), (5, 3986998), (10, 1993499), (19, 1049210), (38, 524605), (95, 209842), (190, 104921), (239, 83410), (439, 45410), (478, 41705), (878, 22705), (1195, 16682), (2195, 9082), (2390, 8341), (4390, 4541)]