1289122

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:321

約数の個数: 16

約数和(自身を含む): 2016000

約数和(自身を除く): 726878

約数列:

[1, 2, 41, 79, 82, 158, 199, 398, 3239, 6478, 8159, 15721, 16318, 31442, 644561, 1289122]

約数ペア:

[(1, 1289122), (2, 644561), (41, 31442), (79, 16318), (82, 15721), (158, 8159), (199, 6478), (398, 3239)]