81353660

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{32029}}^1$

素因数の和:32165

約数の個数: 24

約数和(自身を含む): 172193280

約数和(自身を除く): 90839620

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 32029, 64058, 128116, 160145, 320290, 640580, 4067683, 8135366, 16270732, 20338415, 40676830, 81353660]

約数ペア:

[(1, 81353660), (2, 40676830), (4, 20338415), (5, 16270732), (10, 8135366), (20, 4067683), (127, 640580), (254, 320290), (508, 160145), (635, 128116), (1270, 64058), (2540, 32029)]