20172640

素因数分解:

$2^5\times 5^1\times {\mathrm{126079}}^1$

素因数の和:126094

約数の個数: 24

約数和(自身を含む): 47658240

約数和(自身を除く): 27485600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 126079, 252158, 504316, 630395, 1008632, 1260790, 2017264, 2521580, 4034528, 5043160, 10086320, 20172640]

約数ペア:

[(1, 20172640), (2, 10086320), (4, 5043160), (5, 4034528), (8, 2521580), (10, 2017264), (16, 1260790), (20, 1008632), (32, 630395), (40, 504316), (80, 252158), (160, 126079)]