28097140

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{17783}}^1$

素因数の和:17871

約数の個数: 24

約数和(自身を含む): 59754240

約数和(自身を除く): 31657100

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 17783, 35566, 71132, 88915, 177830, 355660, 1404857, 2809714, 5619428, 7024285, 14048570, 28097140]

約数ペア:

[(1, 28097140), (2, 14048570), (4, 7024285), (5, 5619428), (10, 2809714), (20, 1404857), (79, 355660), (158, 177830), (316, 88915), (395, 71132), (790, 35566), (1580, 17783)]