28077720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:353

約数の個数: 128

約数和(自身を含む): 93312000

約数和(自身を除く): 65234280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 89, 110, 120, 132, 165, 178, 220, 239, 264, 267, 330, 356, 440, 445, 478, 534, 660, 712, 717, 890, 956, 979, 1068, 1195, 1320, 1335, 1434, 1780, 1912, 1958, 2136, 2390, 2629, 2670, 2868, 2937, 3560, 3585, 3916, 4780, 4895, 5258, 5340, 5736, 5874, 7170, 7832, 7887, 9560, 9790, 10516, 10680, 11748, 13145, 14340, 14685, 15774, 19580, 21032, 21271, 23496, 26290, 28680, 29370, 31548, 39160, 39435, 42542, 52580, 58740, 63096, 63813, 78870, 85084, 105160, 106355, 117480, 127626, 157740, 170168, 212710, 233981, 255252, 315480, 319065, 425420, 467962, 510504, 638130, 701943, 850840, 935924, 1169905, 1276260, 1403886, 1871848, 2339810, 2552520, 2807772, 3509715, 4679620, 5615544, 7019430, 9359240, 14038860, 28077720]

約数ペア:

[(1, 28077720), (2, 14038860), (3, 9359240), (4, 7019430), (5, 5615544), (6, 4679620), (8, 3509715), (10, 2807772), (11, 2552520), (12, 2339810), (15, 1871848), (20, 1403886), (22, 1276260), (24, 1169905), (30, 935924), (33, 850840), (40, 701943), (44, 638130), (55, 510504), (60, 467962), (66, 425420), (88, 319065), (89, 315480), (110, 255252), (120, 233981), (132, 212710), (165, 170168), (178, 157740), (220, 127626), (239, 117480), (264, 106355), (267, 105160), (330, 85084), (356, 78870), (440, 63813), (445, 63096), (478, 58740), (534, 52580), (660, 42542), (712, 39435), (717, 39160), (890, 31548), (956, 29370), (979, 28680), (1068, 26290), (1195, 23496), (1320, 21271), (1335, 21032), (1434, 19580), (1780, 15774), (1912, 14685), (1958, 14340), (2136, 13145), (2390, 11748), (2629, 10680), (2670, 10516), (2868, 9790), (2937, 9560), (3560, 7887), (3585, 7832), (3916, 7170), (4780, 5874), (4895, 5736), (5258, 5340)]