78657140

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{49783}}^1$

素因数の和:49871

約数の個数: 24

約数和(自身を含む): 167274240

約数和(自身を除く): 88617100

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 49783, 99566, 199132, 248915, 497830, 995660, 3932857, 7865714, 15731428, 19664285, 39328570, 78657140]

約数ペア:

[(1, 78657140), (2, 39328570), (4, 19664285), (5, 15731428), (10, 7865714), (20, 3932857), (79, 995660), (158, 497830), (316, 248915), (395, 199132), (790, 99566), (1580, 49783)]