280150720

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^2\times {\mathrm{911}}^1$

素因数の和:990

約数の個数: 84

約数和(自身を含む): 690079392

約数和(自身を除く): 409928672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 911, 961, 992, 1240, 1822, 1922, 1984, 2480, 3644, 3844, 4555, 4805, 4960, 7288, 7688, 9110, 9610, 9920, 14576, 15376, 18220, 19220, 28241, 29152, 30752, 36440, 38440, 56482, 58304, 61504, 72880, 76880, 112964, 141205, 145760, 153760, 225928, 282410, 291520, 307520, 451856, 564820, 875471, 903712, 1129640, 1750942, 1807424, 2259280, 3501884, 4377355, 4518560, 7003768, 8754710, 9037120, 14007536, 17509420, 28015072, 35018840, 56030144, 70037680, 140075360, 280150720]

約数ペア:

[(1, 280150720), (2, 140075360), (4, 70037680), (5, 56030144), (8, 35018840), (10, 28015072), (16, 17509420), (20, 14007536), (31, 9037120), (32, 8754710), (40, 7003768), (62, 4518560), (64, 4377355), (80, 3501884), (124, 2259280), (155, 1807424), (160, 1750942), (248, 1129640), (310, 903712), (320, 875471), (496, 564820), (620, 451856), (911, 307520), (961, 291520), (992, 282410), (1240, 225928), (1822, 153760), (1922, 145760), (1984, 141205), (2480, 112964), (3644, 76880), (3844, 72880), (4555, 61504), (4805, 58304), (4960, 56482), (7288, 38440), (7688, 36440), (9110, 30752), (9610, 29152), (9920, 28241), (14576, 19220), (15376, 18220)]