778691991

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{127}}^2$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 1383795840

約数和(自身を除く): 605103849

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 121, 127, 133, 209, 231, 363, 381, 399, 627, 847, 889, 1397, 1463, 2299, 2413, 2541, 2667, 4191, 4389, 6897, 7239, 9779, 15367, 16093, 16129, 16891, 26543, 29337, 46101, 48279, 48387, 50673, 79629, 107569, 112903, 177419, 185801, 291973, 306451, 322707, 338709, 532257, 557403, 875919, 919353, 1241933, 1951609, 2043811, 2145157, 3370961, 3725799, 5854827, 6131433, 6435471, 10112883, 13661263, 23596727, 37080571, 40983789, 70790181, 111241713, 259563997, 778691991]

約数ペア:

[(1, 778691991), (3, 259563997), (7, 111241713), (11, 70790181), (19, 40983789), (21, 37080571), (33, 23596727), (57, 13661263), (77, 10112883), (121, 6435471), (127, 6131433), (133, 5854827), (209, 3725799), (231, 3370961), (363, 2145157), (381, 2043811), (399, 1951609), (627, 1241933), (847, 919353), (889, 875919), (1397, 557403), (1463, 532257), (2299, 338709), (2413, 322707), (2541, 306451), (2667, 291973), (4191, 185801), (4389, 177419), (6897, 112903), (7239, 107569), (9779, 79629), (15367, 50673), (16093, 48387), (16129, 48279), (16891, 46101), (26543, 29337)]