19823920

素因数分解:

$2^4\times 5^1\times {\mathrm{247799}}^1$

素因数の和:247812

約数の個数: 20

約数和(自身を含む): 46090800

約数和(自身を除く): 26266880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 247799, 495598, 991196, 1238995, 1982392, 2477990, 3964784, 4955980, 9911960, 19823920]

約数ペア:

[(1, 19823920), (2, 9911960), (4, 4955980), (5, 3964784), (8, 2477990), (10, 1982392), (16, 1238995), (20, 991196), (40, 495598), (80, 247799)]