20402205

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19157}}^1$

素因数の和:19236

約数の個数: 16

約数和(自身を含む): 33105024

約数和(自身を除く): 12702819

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19157, 57471, 95785, 287355, 1360147, 4080441, 6800735, 20402205]

約数ペア:

[(1, 20402205), (3, 6800735), (5, 4080441), (15, 1360147), (71, 287355), (213, 95785), (355, 57471), (1065, 19157)]