78127180

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{9551}}^1$

素因数の和:9969

約数の個数: 24

約数和(自身を含む): 164485440

約数和(自身を除く): 86358260

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 9551, 19102, 38204, 47755, 95510, 191020, 3906359, 7812718, 15625436, 19531795, 39063590, 78127180]

約数ペア:

[(1, 78127180), (2, 39063590), (4, 19531795), (5, 15625436), (10, 7812718), (20, 3906359), (409, 191020), (818, 95510), (1636, 47755), (2045, 38204), (4090, 19102), (8180, 9551)]