8261980

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{941}}^1$

素因数の和:1389

約数の個数: 24

約数和(自身を含む): 17408160

約数和(自身を除く): 9146180

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 941, 1756, 1882, 2195, 3764, 4390, 4705, 8780, 9410, 18820, 413099, 826198, 1652396, 2065495, 4130990, 8261980]

約数ペア:

[(1, 8261980), (2, 4130990), (4, 2065495), (5, 1652396), (10, 826198), (20, 413099), (439, 18820), (878, 9410), (941, 8780), (1756, 4705), (1882, 4390), (2195, 3764)]