28158221

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{8363}}^1$

素因数の和:8420

約数の個数: 16

約数和(自身を含む): 35597184

約数和(自身を除く): 7438963

約数列:

[1, 7, 13, 37, 91, 259, 481, 3367, 8363, 58541, 108719, 309431, 761033, 2166017, 4022603, 28158221]

約数ペア:

[(1, 28158221), (7, 4022603), (13, 2166017), (37, 761033), (91, 309431), (259, 108719), (481, 58541), (3367, 8363)]