21797356

素因数分解:

$2^2\times 7^2\times {\mathrm{111211}}^1$

素因数の和:111229

約数の個数: 18

約数和(自身を含む): 44373588

約数和(自身を除く): 22576232

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 111211, 222422, 444844, 778477, 1556954, 3113908, 5449339, 10898678, 21797356]

約数ペア:

[(1, 21797356), (2, 10898678), (4, 5449339), (7, 3113908), (14, 1556954), (28, 778477), (49, 444844), (98, 222422), (196, 111211)]