18719984

素因数分解:

$2^4\times {\mathrm{173}}^1\times {\mathrm{6763}}^1$

素因数の和:6944

約数の個数: 20

約数和(自身を含む): 36485016

約数和(自身を除く): 17765032

約数列:

[1, 2, 4, 8, 16, 173, 346, 692, 1384, 2768, 6763, 13526, 27052, 54104, 108208, 1169999, 2339998, 4679996, 9359992, 18719984]

約数ペア:

[(1, 18719984), (2, 9359992), (4, 4679996), (8, 2339998), (16, 1169999), (173, 108208), (346, 54104), (692, 27052), (1384, 13526), (2768, 6763)]