638764819

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{5981}}^1$

素因数の和:6091

約数の個数: 32

約数和(自身を含む): 849922560

約数和(自身を除く): 211157741

約数列:

[1, 7, 11, 19, 73, 77, 133, 209, 511, 803, 1387, 1463, 5621, 5981, 9709, 15257, 41867, 65791, 106799, 113639, 436613, 460537, 795473, 1250029, 3056291, 4802743, 8295647, 8750203, 33619201, 58069529, 91252117, 638764819]

約数ペア:

[(1, 638764819), (7, 91252117), (11, 58069529), (19, 33619201), (73, 8750203), (77, 8295647), (133, 4802743), (209, 3056291), (511, 1250029), (803, 795473), (1387, 460537), (1463, 436613), (5621, 113639), (5981, 106799), (9709, 65791), (15257, 41867)]