21376090

素因数分解:

$2^1\times 5^1\times {\mathrm{277}}^1\times {\mathrm{7717}}^1$

素因数の和:8001

約数の個数: 16

約数和(自身を含む): 38620872

約数和(自身を除く): 17244782

約数列:

[1, 2, 5, 10, 277, 554, 1385, 2770, 7717, 15434, 38585, 77170, 2137609, 4275218, 10688045, 21376090]

約数ペア:

[(1, 21376090), (2, 10688045), (5, 4275218), (10, 2137609), (277, 77170), (554, 38585), (1385, 15434), (2770, 7717)]