21279495

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83449}}^1$

素因数の和:83474

約数の個数: 16

約数和(自身を含む): 36050400

約数和(自身を除く): 14770905

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 83449, 250347, 417245, 1251735, 1418633, 4255899, 7093165, 21279495]

約数ペア:

[(1, 21279495), (3, 7093165), (5, 4255899), (15, 1418633), (17, 1251735), (51, 417245), (85, 250347), (255, 83449)]