19854477

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{7907}}^1$

素因数の和:7950

約数の個数: 20

約数和(自身を含む): 30619776

約数和(自身を除く): 10765299

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 7907, 23721, 71163, 213489, 245117, 640467, 735351, 2206053, 6618159, 19854477]

約数ペア:

[(1, 19854477), (3, 6618159), (9, 2206053), (27, 735351), (31, 640467), (81, 245117), (93, 213489), (279, 71163), (837, 23721), (2511, 7907)]