21391306

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1\times {\mathrm{757}}^1$

素因数の和:1029

約数の個数: 16

約数和(自身を含む): 32745600

約数和(自身を除く): 11354294

約数列:

[1, 2, 71, 142, 199, 398, 757, 1514, 14129, 28258, 53747, 107494, 150643, 301286, 10695653, 21391306]

約数ペア:

[(1, 21391306), (2, 10695653), (71, 301286), (142, 150643), (199, 107494), (398, 53747), (757, 28258), (1514, 14129)]