21388336

素因数分解:

$2^4\times {\mathrm{173}}^1\times {\mathrm{7727}}^1$

素因数の和:7908

約数の個数: 20

約数和(自身を含む): 41684832

約数和(自身を除く): 20296496

約数列:

[1, 2, 4, 8, 16, 173, 346, 692, 1384, 2768, 7727, 15454, 30908, 61816, 123632, 1336771, 2673542, 5347084, 10694168, 21388336]

約数ペア:

[(1, 21388336), (2, 10694168), (4, 5347084), (8, 2673542), (16, 1336771), (173, 123632), (346, 61816), (692, 30908), (1384, 15454), (2768, 7727)]