78166280

素因数分解:

$2^3\times 5^1\times {\mathrm{1954157}}^1$

素因数の和:1954168

約数の個数: 16

約数和(自身を含む): 175874220

約数和(自身を除く): 97707940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1954157, 3908314, 7816628, 9770785, 15633256, 19541570, 39083140, 78166280]

約数ペア:

[(1, 78166280), (2, 39083140), (4, 19541570), (5, 15633256), (8, 9770785), (10, 7816628), (20, 3908314), (40, 1954157)]