1247640891

素因数分解:

$3^1\times 7^3\times {\mathrm{1212479}}^1$

素因数の和:1212503

約数の個数: 16

約数和(自身を含む): 1939968000

約数和(自身を除く): 692327109

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 1212479, 3637437, 8487353, 25462059, 59411471, 178234413, 415880297, 1247640891]

約数ペア:

[(1, 1247640891), (3, 415880297), (7, 178234413), (21, 59411471), (49, 25462059), (147, 8487353), (343, 3637437), (1029, 1212479)]