51280460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:172

約数の個数: 144

約数和(自身を含む): 140652288

約数和(自身を除く): 89371828

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 67, 70, 71, 77, 98, 110, 134, 140, 142, 154, 196, 220, 245, 268, 284, 308, 335, 355, 385, 469, 490, 497, 539, 670, 710, 737, 770, 781, 938, 980, 994, 1078, 1340, 1420, 1474, 1540, 1562, 1876, 1988, 2156, 2345, 2485, 2695, 2948, 3124, 3283, 3479, 3685, 3905, 4690, 4757, 4970, 5159, 5390, 5467, 6566, 6958, 7370, 7810, 9380, 9514, 9940, 10318, 10780, 10934, 13132, 13916, 14740, 15620, 16415, 17395, 19028, 20636, 21868, 23785, 25795, 27335, 32830, 33299, 34790, 36113, 38269, 47570, 51590, 52327, 54670, 65660, 66598, 69580, 72226, 76538, 95140, 103180, 104654, 109340, 133196, 144452, 153076, 166495, 180565, 191345, 209308, 233093, 261635, 332990, 361130, 366289, 382690, 466186, 523270, 665980, 722260, 732578, 765380, 932372, 1046540, 1165465, 1465156, 1831445, 2330930, 2564023, 3662890, 4661860, 5128046, 7325780, 10256092, 12820115, 25640230, 51280460]

約数ペア:

[(1, 51280460), (2, 25640230), (4, 12820115), (5, 10256092), (7, 7325780), (10, 5128046), (11, 4661860), (14, 3662890), (20, 2564023), (22, 2330930), (28, 1831445), (35, 1465156), (44, 1165465), (49, 1046540), (55, 932372), (67, 765380), (70, 732578), (71, 722260), (77, 665980), (98, 523270), (110, 466186), (134, 382690), (140, 366289), (142, 361130), (154, 332990), (196, 261635), (220, 233093), (245, 209308), (268, 191345), (284, 180565), (308, 166495), (335, 153076), (355, 144452), (385, 133196), (469, 109340), (490, 104654), (497, 103180), (539, 95140), (670, 76538), (710, 72226), (737, 69580), (770, 66598), (781, 65660), (938, 54670), (980, 52327), (994, 51590), (1078, 47570), (1340, 38269), (1420, 36113), (1474, 34790), (1540, 33299), (1562, 32830), (1876, 27335), (1988, 25795), (2156, 23785), (2345, 21868), (2485, 20636), (2695, 19028), (2948, 17395), (3124, 16415), (3283, 15620), (3479, 14740), (3685, 13916), (3905, 13132), (4690, 10934), (4757, 10780), (4970, 10318), (5159, 9940), (5390, 9514), (5467, 9380), (6566, 7810), (6958, 7370)]