28778911

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4157}}^1$

素因数の和:4230

約数の個数: 16

約数和(自身を含む): 35126784

約数和(自身を除く): 6347873

約数列:

[1, 7, 23, 43, 161, 301, 989, 4157, 6923, 29099, 95611, 178751, 669277, 1251257, 4111273, 28778911]

約数ペア:

[(1, 28778911), (7, 4111273), (23, 1251257), (43, 669277), (161, 178751), (301, 95611), (989, 29099), (4157, 6923)]