20008155

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{18787}}^1$

素因数の和:18866

約数の個数: 16

約数和(自身を含む): 32465664

約数和(自身を除く): 12457509

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 18787, 56361, 93935, 281805, 1333877, 4001631, 6669385, 20008155]

約数ペア:

[(1, 20008155), (3, 6669385), (5, 4001631), (15, 1333877), (71, 281805), (213, 93935), (355, 56361), (1065, 18787)]