21400844

素因数分解:

$2^2\times {\mathrm{113}}^2\times {\mathrm{419}}^1$

素因数の和:649

約数の個数: 18

約数和(自身を含む): 37876020

約数和(自身を除く): 16475176

約数列:

[1, 2, 4, 113, 226, 419, 452, 838, 1676, 12769, 25538, 47347, 51076, 94694, 189388, 5350211, 10700422, 21400844]

約数ペア:

[(1, 21400844), (2, 10700422), (4, 5350211), (113, 189388), (226, 94694), (419, 51076), (452, 47347), (838, 25538), (1676, 12769)]