20097680

素因数分解:

$2^4\times 5^1\times {\mathrm{251221}}^1$

素因数の和:251234

約数の個数: 20

約数和(自身を含む): 46727292

約数和(自身を除く): 26629612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251221, 502442, 1004884, 1256105, 2009768, 2512210, 4019536, 5024420, 10048840, 20097680]

約数ペア:

[(1, 20097680), (2, 10048840), (4, 5024420), (5, 4019536), (8, 2512210), (10, 2009768), (16, 1256105), (20, 1004884), (40, 502442), (80, 251221)]