12840891

素因数分解:

$3^1\times 7^3\times {\mathrm{12479}}^1$

素因数の和:12503

約数の個数: 16

約数和(自身を含む): 19968000

約数和(自身を除く): 7127109

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 12479, 37437, 87353, 262059, 611471, 1834413, 4280297, 12840891]

約数ペア:

[(1, 12840891), (3, 4280297), (7, 1834413), (21, 611471), (49, 262059), (147, 87353), (343, 37437), (1029, 12479)]