18978477

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53161}}^1$

素因数の和:53188

約数の個数: 16

約数和(自身を含む): 30621312

約数和(自身を除く): 11642835

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 53161, 159483, 372127, 903737, 1116381, 2711211, 6326159, 18978477]

約数ペア:

[(1, 18978477), (3, 6326159), (7, 2711211), (17, 1116381), (21, 903737), (51, 372127), (119, 159483), (357, 53161)]