21471471

素因数分解:

$3^2\times 7^1\times {\mathrm{499}}^1\times {\mathrm{683}}^1$

素因数の和:1195

約数の個数: 24

約数和(自身を含む): 35568000

約数和(自身を除く): 14096529

約数列:

[1, 3, 7, 9, 21, 63, 499, 683, 1497, 2049, 3493, 4491, 4781, 6147, 10479, 14343, 31437, 43029, 340817, 1022451, 2385719, 3067353, 7157157, 21471471]

約数ペア:

[(1, 21471471), (3, 7157157), (7, 3067353), (9, 2385719), (21, 1022451), (63, 340817), (499, 43029), (683, 31437), (1497, 14343), (2049, 10479), (3493, 6147), (4491, 4781)]