7120421

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 9707520

約数和(自身を除く): 2587099

約数列:

[1, 7, 11, 19, 31, 77, 133, 157, 209, 217, 341, 589, 1099, 1463, 1727, 2387, 2983, 4123, 4867, 6479, 12089, 20881, 32813, 34069, 45353, 53537, 92473, 229691, 374759, 647311, 1017203, 7120421]

約数ペア:

[(1, 7120421), (7, 1017203), (11, 647311), (19, 374759), (31, 229691), (77, 92473), (133, 53537), (157, 45353), (209, 34069), (217, 32813), (341, 20881), (589, 12089), (1099, 6479), (1463, 4867), (1727, 4123), (2387, 2983)]