79267280

素因数分解:

$2^4\times 5^1\times {\mathrm{990841}}^1$

素因数の和:990854

約数の個数: 20

約数和(自身を含む): 184296612

約数和(自身を除く): 105029332

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 990841, 1981682, 3963364, 4954205, 7926728, 9908410, 15853456, 19816820, 39633640, 79267280]

約数ペア:

[(1, 79267280), (2, 39633640), (4, 19816820), (5, 15853456), (8, 9908410), (10, 7926728), (16, 4954205), (20, 3963364), (40, 1981682), (80, 990841)]