1991717760

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1$

素因数の和:469

約数の個数: 256

約数和(自身を含む): 6635059200

約数和(自身を除く): 4643341440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 109, 120, 124, 128, 155, 160, 186, 192, 218, 240, 248, 307, 310, 320, 327, 372, 384, 436, 465, 480, 496, 545, 614, 620, 640, 654, 744, 872, 921, 930, 960, 992, 1090, 1228, 1240, 1308, 1488, 1535, 1635, 1744, 1842, 1860, 1920, 1984, 2180, 2456, 2480, 2616, 2976, 3070, 3270, 3379, 3488, 3684, 3720, 3968, 4360, 4605, 4912, 4960, 5232, 5952, 6140, 6540, 6758, 6976, 7368, 7440, 8720, 9210, 9517, 9824, 9920, 10137, 10464, 11904, 12280, 13080, 13516, 13952, 14736, 14880, 16895, 17440, 18420, 19034, 19648, 19840, 20274, 20928, 24560, 26160, 27032, 28551, 29472, 29760, 33463, 33790, 34880, 36840, 38068, 39296, 40548, 41856, 47585, 49120, 50685, 52320, 54064, 57102, 58944, 59520, 66926, 67580, 69760, 73680, 76136, 81096, 95170, 98240, 100389, 101370, 104640, 108128, 114204, 117888, 133852, 135160, 142755, 147360, 152272, 162192, 167315, 190340, 196480, 200778, 202740, 209280, 216256, 228408, 267704, 270320, 285510, 294720, 304544, 324384, 334630, 380680, 401556, 405480, 432512, 456816, 501945, 535408, 540640, 571020, 589440, 609088, 648768, 669260, 761360, 803112, 810960, 913632, 1003890, 1037353, 1070816, 1081280, 1142040, 1218176, 1297536, 1338520, 1522720, 1606224, 1621920, 1827264, 2007780, 2074706, 2141632, 2162560, 2284080, 2677040, 3045440, 3112059, 3212448, 3243840, 3654528, 4015560, 4149412, 4283264, 4568160, 5186765, 5354080, 6090880, 6224118, 6424896, 6487680, 8031120, 8298824, 9136320, 10373530, 10708160, 12448236, 12849792, 15560295, 16062240, 16597648, 18272640, 20747060, 21416320, 24896472, 31120590, 32124480, 33195296, 41494120, 49792944, 62241180, 64248960, 66390592, 82988240, 99585888, 124482360, 132781184, 165976480, 199171776, 248964720, 331952960, 398343552, 497929440, 663905920, 995858880, 1991717760]

約数ペア:

[(1, 1991717760), (2, 995858880), (3, 663905920), (4, 497929440), (5, 398343552), (6, 331952960), (8, 248964720), (10, 199171776), (12, 165976480), (15, 132781184), (16, 124482360), (20, 99585888), (24, 82988240), (30, 66390592), (31, 64248960), (32, 62241180), (40, 49792944), (48, 41494120), (60, 33195296), (62, 32124480), (64, 31120590), (80, 24896472), (93, 21416320), (96, 20747060), (109, 18272640), (120, 16597648), (124, 16062240), (128, 15560295), (155, 12849792), (160, 12448236), (186, 10708160), (192, 10373530), (218, 9136320), (240, 8298824), (248, 8031120), (307, 6487680), (310, 6424896), (320, 6224118), (327, 6090880), (372, 5354080), (384, 5186765), (436, 4568160), (465, 4283264), (480, 4149412), (496, 4015560), (545, 3654528), (614, 3243840), (620, 3212448), (640, 3112059), (654, 3045440), (744, 2677040), (872, 2284080), (921, 2162560), (930, 2141632), (960, 2074706), (992, 2007780), (1090, 1827264), (1228, 1621920), (1240, 1606224), (1308, 1522720), (1488, 1338520), (1535, 1297536), (1635, 1218176), (1744, 1142040), (1842, 1081280), (1860, 1070816), (1920, 1037353), (1984, 1003890), (2180, 913632), (2456, 810960), (2480, 803112), (2616, 761360), (2976, 669260), (3070, 648768), (3270, 609088), (3379, 589440), (3488, 571020), (3684, 540640), (3720, 535408), (3968, 501945), (4360, 456816), (4605, 432512), (4912, 405480), (4960, 401556), (5232, 380680), (5952, 334630), (6140, 324384), (6540, 304544), (6758, 294720), (6976, 285510), (7368, 270320), (7440, 267704), (8720, 228408), (9210, 216256), (9517, 209280), (9824, 202740), (9920, 200778), (10137, 196480), (10464, 190340), (11904, 167315), (12280, 162192), (13080, 152272), (13516, 147360), (13952, 142755), (14736, 135160), (14880, 133852), (16895, 117888), (17440, 114204), (18420, 108128), (19034, 104640), (19648, 101370), (19840, 100389), (20274, 98240), (20928, 95170), (24560, 81096), (26160, 76136), (27032, 73680), (28551, 69760), (29472, 67580), (29760, 66926), (33463, 59520), (33790, 58944), (34880, 57102), (36840, 54064), (38068, 52320), (39296, 50685), (40548, 49120), (41856, 47585)]