28200991

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7207}}^1$

素因数の和:7270

約数の個数: 16

約数和(自身を含む): 35521024

約数和(自身を除く): 7320033

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 7207, 50449, 93691, 309901, 655837, 2169307, 4028713, 28200991]

約数ペア:

[(1, 28200991), (7, 4028713), (13, 2169307), (43, 655837), (91, 309901), (301, 93691), (559, 50449), (3913, 7207)]