641328000

素因数分解:

$2^7\times 3^1\times 5^3\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:494

約数の個数: 256

約数和(自身を含む): 2199674880

約数和(自身を除く): 1558346880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 31, 32, 40, 48, 50, 60, 62, 64, 75, 80, 93, 96, 100, 120, 124, 125, 128, 150, 155, 160, 186, 192, 200, 240, 248, 250, 300, 310, 320, 372, 375, 384, 400, 431, 465, 480, 496, 500, 600, 620, 640, 744, 750, 775, 800, 862, 930, 960, 992, 1000, 1200, 1240, 1293, 1488, 1500, 1550, 1600, 1724, 1860, 1920, 1984, 2000, 2155, 2325, 2400, 2480, 2586, 2976, 3000, 3100, 3200, 3448, 3720, 3875, 3968, 4000, 4310, 4650, 4800, 4960, 5172, 5952, 6000, 6200, 6465, 6896, 7440, 7750, 8000, 8620, 9300, 9600, 9920, 10344, 10775, 11625, 11904, 12000, 12400, 12930, 13361, 13792, 14880, 15500, 16000, 17240, 18600, 19840, 20688, 21550, 23250, 24000, 24800, 25860, 26722, 27584, 29760, 31000, 32325, 34480, 37200, 40083, 41376, 43100, 46500, 48000, 49600, 51720, 53444, 53875, 55168, 59520, 62000, 64650, 66805, 68960, 74400, 80166, 82752, 86200, 93000, 99200, 103440, 106888, 107750, 124000, 129300, 133610, 137920, 148800, 160332, 161625, 165504, 172400, 186000, 200415, 206880, 213776, 215500, 248000, 258600, 267220, 275840, 297600, 320664, 323250, 334025, 344800, 372000, 400830, 413760, 427552, 431000, 496000, 517200, 534440, 641328, 646500, 668050, 689600, 744000, 801660, 827520, 855104, 862000, 1002075, 1034400, 1068880, 1282656, 1293000, 1336100, 1379200, 1488000, 1603320, 1670125, 1710208, 1724000, 2004150, 2068800, 2137760, 2565312, 2586000, 2672200, 3206640, 3340250, 3448000, 4008300, 4137600, 4275520, 5010375, 5130624, 5172000, 5344400, 6413280, 6680500, 6896000, 8016600, 8551040, 10020750, 10344000, 10688800, 12826560, 13361000, 16033200, 20041500, 20688000, 21377600, 25653120, 26722000, 32066400, 40083000, 42755200, 53444000, 64132800, 80166000, 106888000, 128265600, 160332000, 213776000, 320664000, 641328000]

約数ペア:

[(1, 641328000), (2, 320664000), (3, 213776000), (4, 160332000), (5, 128265600), (6, 106888000), (8, 80166000), (10, 64132800), (12, 53444000), (15, 42755200), (16, 40083000), (20, 32066400), (24, 26722000), (25, 25653120), (30, 21377600), (31, 20688000), (32, 20041500), (40, 16033200), (48, 13361000), (50, 12826560), (60, 10688800), (62, 10344000), (64, 10020750), (75, 8551040), (80, 8016600), (93, 6896000), (96, 6680500), (100, 6413280), (120, 5344400), (124, 5172000), (125, 5130624), (128, 5010375), (150, 4275520), (155, 4137600), (160, 4008300), (186, 3448000), (192, 3340250), (200, 3206640), (240, 2672200), (248, 2586000), (250, 2565312), (300, 2137760), (310, 2068800), (320, 2004150), (372, 1724000), (375, 1710208), (384, 1670125), (400, 1603320), (431, 1488000), (465, 1379200), (480, 1336100), (496, 1293000), (500, 1282656), (600, 1068880), (620, 1034400), (640, 1002075), (744, 862000), (750, 855104), (775, 827520), (800, 801660), (862, 744000), (930, 689600), (960, 668050), (992, 646500), (1000, 641328), (1200, 534440), (1240, 517200), (1293, 496000), (1488, 431000), (1500, 427552), (1550, 413760), (1600, 400830), (1724, 372000), (1860, 344800), (1920, 334025), (1984, 323250), (2000, 320664), (2155, 297600), (2325, 275840), (2400, 267220), (2480, 258600), (2586, 248000), (2976, 215500), (3000, 213776), (3100, 206880), (3200, 200415), (3448, 186000), (3720, 172400), (3875, 165504), (3968, 161625), (4000, 160332), (4310, 148800), (4650, 137920), (4800, 133610), (4960, 129300), (5172, 124000), (5952, 107750), (6000, 106888), (6200, 103440), (6465, 99200), (6896, 93000), (7440, 86200), (7750, 82752), (8000, 80166), (8620, 74400), (9300, 68960), (9600, 66805), (9920, 64650), (10344, 62000), (10775, 59520), (11625, 55168), (11904, 53875), (12000, 53444), (12400, 51720), (12930, 49600), (13361, 48000), (13792, 46500), (14880, 43100), (15500, 41376), (16000, 40083), (17240, 37200), (18600, 34480), (19840, 32325), (20688, 31000), (21550, 29760), (23250, 27584), (24000, 26722), (24800, 25860)]