678779720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1\times {\mathrm{1097}}^1$

素因数の和:1638

約数の個数: 64

約数和(自身を含む): 1581120000

約数和(自身を除く): 902340280

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 499, 620, 998, 1097, 1240, 1996, 2194, 2495, 3992, 4388, 4990, 5485, 8776, 9980, 10970, 15469, 19960, 21940, 30938, 34007, 43880, 61876, 68014, 77345, 123752, 136028, 154690, 170035, 272056, 309380, 340070, 547403, 618760, 680140, 1094806, 1360280, 2189612, 2737015, 4379224, 5474030, 10948060, 16969493, 21896120, 33938986, 67877972, 84847465, 135755944, 169694930, 339389860, 678779720]

約数ペア:

[(1, 678779720), (2, 339389860), (4, 169694930), (5, 135755944), (8, 84847465), (10, 67877972), (20, 33938986), (31, 21896120), (40, 16969493), (62, 10948060), (124, 5474030), (155, 4379224), (248, 2737015), (310, 2189612), (499, 1360280), (620, 1094806), (998, 680140), (1097, 618760), (1240, 547403), (1996, 340070), (2194, 309380), (2495, 272056), (3992, 170035), (4388, 154690), (4990, 136028), (5485, 123752), (8776, 77345), (9980, 68014), (10970, 61876), (15469, 43880), (19960, 34007), (21940, 30938)]