128804781

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{431}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 212751360

約数和(自身を除く): 83946579

約数列:

[1, 3, 7, 19, 21, 49, 57, 107, 133, 147, 321, 399, 431, 749, 931, 1293, 2033, 2247, 2793, 3017, 5243, 6099, 8189, 9051, 14231, 15729, 21119, 24567, 42693, 46117, 57323, 63357, 99617, 138351, 171969, 298851, 322819, 401261, 876223, 968457, 1203783, 2259733, 2628669, 6133561, 6779199, 18400683, 42934927, 128804781]

約数ペア:

[(1, 128804781), (3, 42934927), (7, 18400683), (19, 6779199), (21, 6133561), (49, 2628669), (57, 2259733), (107, 1203783), (133, 968457), (147, 876223), (321, 401261), (399, 322819), (431, 298851), (749, 171969), (931, 138351), (1293, 99617), (2033, 63357), (2247, 57323), (2793, 46117), (3017, 42693), (5243, 24567), (6099, 21119), (8189, 15729), (9051, 14231)]