20685495

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19423}}^1$

素因数の和:19502

約数の個数: 16

約数和(自身を含む): 33564672

約数和(自身を除く): 12879177

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19423, 58269, 97115, 291345, 1379033, 4137099, 6895165, 20685495]

約数ペア:

[(1, 20685495), (3, 6895165), (5, 4137099), (15, 1379033), (71, 291345), (213, 97115), (355, 58269), (1065, 19423)]