19904605

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{9323}}^1$

素因数の和:9396

約数の個数: 16

約数和(自身を含む): 27748224

約数和(自身を除く): 7843619

約数列:

[1, 5, 7, 35, 61, 305, 427, 2135, 9323, 46615, 65261, 326305, 568703, 2843515, 3980921, 19904605]

約数ペア:

[(1, 19904605), (5, 3980921), (7, 2843515), (35, 568703), (61, 326305), (305, 65261), (427, 46615), (2135, 9323)]