18975999

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{283}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 30244864

約数和(自身を除く): 11268865

約数列:

[1, 3, 7, 21, 31, 93, 103, 217, 283, 309, 651, 721, 849, 1981, 2163, 3193, 5943, 8773, 9579, 22351, 26319, 29149, 61411, 67053, 87447, 184233, 204043, 612129, 903619, 2710857, 6325333, 18975999]

約数ペア:

[(1, 18975999), (3, 6325333), (7, 2710857), (21, 903619), (31, 612129), (93, 204043), (103, 184233), (217, 87447), (283, 67053), (309, 61411), (651, 29149), (721, 26319), (849, 22351), (1981, 9579), (2163, 8773), (3193, 5943)]