19916001

素因数分解:

$3^2\times 7^2\times {\mathrm{45161}}^1$

素因数の和:45181

約数の個数: 18

約数和(自身を含む): 33465042

約数和(自身を除く): 13549041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45161, 135483, 316127, 406449, 948381, 2212889, 2845143, 6638667, 19916001]

約数ペア:

[(1, 19916001), (3, 6638667), (7, 2845143), (9, 2212889), (21, 948381), (49, 406449), (63, 316127), (147, 135483), (441, 45161)]