19880707

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 26542080

約数和(自身を除く): 6661373

約数列:

[1, 7, 11, 19, 77, 107, 127, 133, 209, 749, 889, 1177, 1397, 1463, 2033, 2413, 8239, 9779, 13589, 14231, 16891, 22363, 26543, 95123, 149479, 156541, 185801, 258191, 1046353, 1807337, 2840101, 19880707]

約数ペア:

[(1, 19880707), (7, 2840101), (11, 1807337), (19, 1046353), (77, 258191), (107, 185801), (127, 156541), (133, 149479), (209, 95123), (749, 26543), (889, 22363), (1177, 16891), (1397, 14231), (1463, 13589), (2033, 9779), (2413, 8239)]