21515286

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{275837}}^1$

素因数の和:275855

約数の個数: 16

約数和(自身を含む): 46340784

約数和(自身を除く): 24825498

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 275837, 551674, 827511, 1655022, 3585881, 7171762, 10757643, 21515286]

約数ペア:

[(1, 21515286), (2, 10757643), (3, 7171762), (6, 3585881), (13, 1655022), (26, 827511), (39, 551674), (78, 275837)]