40388840

素因数分解:

$2^3\times 5^1\times {\mathrm{787}}^1\times {\mathrm{1283}}^1$

素因数の和:2081

約数の個数: 32

約数和(自身を含む): 91061280

約数和(自身を除く): 50672440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 787, 1283, 1574, 2566, 3148, 3935, 5132, 6296, 6415, 7870, 10264, 12830, 15740, 25660, 31480, 51320, 1009721, 2019442, 4038884, 5048605, 8077768, 10097210, 20194420, 40388840]

約数ペア:

[(1, 40388840), (2, 20194420), (4, 10097210), (5, 8077768), (8, 5048605), (10, 4038884), (20, 2019442), (40, 1009721), (787, 51320), (1283, 31480), (1574, 25660), (2566, 15740), (3148, 12830), (3935, 10264), (5132, 7870), (6296, 6415)]