78835420

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{8779}}^1$

素因数の和:9237

約数の個数: 24

約数和(自身を含む): 165942000

約数和(自身を除く): 87106580

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2245, 4490, 8779, 8980, 17558, 35116, 43895, 87790, 175580, 3941771, 7883542, 15767084, 19708855, 39417710, 78835420]

約数ペア:

[(1, 78835420), (2, 39417710), (4, 19708855), (5, 15767084), (10, 7883542), (20, 3941771), (449, 175580), (898, 87790), (1796, 43895), (2245, 35116), (4490, 17558), (8779, 8980)]