21382560

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:531

約数の個数: 144

約数和(自身を含む): 75479040

約数和(自身を除く): 54096480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 32, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 96, 120, 124, 144, 155, 160, 180, 186, 240, 248, 279, 288, 310, 360, 372, 465, 479, 480, 496, 558, 620, 720, 744, 930, 958, 992, 1116, 1240, 1395, 1437, 1440, 1488, 1860, 1916, 2232, 2395, 2480, 2790, 2874, 2976, 3720, 3832, 4311, 4464, 4790, 4960, 5580, 5748, 7185, 7440, 7664, 8622, 8928, 9580, 11160, 11496, 14370, 14849, 14880, 15328, 17244, 19160, 21555, 22320, 22992, 28740, 29698, 34488, 38320, 43110, 44547, 44640, 45984, 57480, 59396, 68976, 74245, 76640, 86220, 89094, 114960, 118792, 133641, 137952, 148490, 172440, 178188, 222735, 229920, 237584, 267282, 296980, 344880, 356376, 445470, 475168, 534564, 593960, 668205, 689760, 712752, 890940, 1069128, 1187920, 1336410, 1425504, 1781880, 2138256, 2375840, 2672820, 3563760, 4276512, 5345640, 7127520, 10691280, 21382560]

約数ペア:

[(1, 21382560), (2, 10691280), (3, 7127520), (4, 5345640), (5, 4276512), (6, 3563760), (8, 2672820), (9, 2375840), (10, 2138256), (12, 1781880), (15, 1425504), (16, 1336410), (18, 1187920), (20, 1069128), (24, 890940), (30, 712752), (31, 689760), (32, 668205), (36, 593960), (40, 534564), (45, 475168), (48, 445470), (60, 356376), (62, 344880), (72, 296980), (80, 267282), (90, 237584), (93, 229920), (96, 222735), (120, 178188), (124, 172440), (144, 148490), (155, 137952), (160, 133641), (180, 118792), (186, 114960), (240, 89094), (248, 86220), (279, 76640), (288, 74245), (310, 68976), (360, 59396), (372, 57480), (465, 45984), (479, 44640), (480, 44547), (496, 43110), (558, 38320), (620, 34488), (720, 29698), (744, 28740), (930, 22992), (958, 22320), (992, 21555), (1116, 19160), (1240, 17244), (1395, 15328), (1437, 14880), (1440, 14849), (1488, 14370), (1860, 11496), (1916, 11160), (2232, 9580), (2395, 8928), (2480, 8622), (2790, 7664), (2874, 7440), (2976, 7185), (3720, 5748), (3832, 5580), (4311, 4960), (4464, 4790)]