1261891169

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{47779}}^1$

素因数の和:47818

約数の個数: 20

約数和(自身を含む): 1605981360

約数和(自身を除く): 344090191

約数列:

[1, 7, 11, 49, 77, 343, 539, 2401, 3773, 26411, 47779, 334453, 525569, 2341171, 3678983, 16388197, 25752881, 114717379, 180270167, 1261891169]

約数ペア:

[(1, 1261891169), (7, 180270167), (11, 114717379), (49, 25752881), (77, 16388197), (343, 3678983), (539, 2341171), (2401, 525569), (3773, 334453), (26411, 47779)]