21178774

素因数分解:

$2^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1\times {\mathrm{419}}^1$

素因数の和:747

約数の個数: 16

約数和(自身を含む): 32256000

約数和(自身を除く): 11077226

約数列:

[1, 2, 127, 199, 254, 398, 419, 838, 25273, 50546, 53213, 83381, 106426, 166762, 10589387, 21178774]

約数ペア:

[(1, 21178774), (2, 10589387), (127, 166762), (199, 106426), (254, 83381), (398, 53213), (419, 50546), (838, 25273)]