640289280

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{317}}^1$

素因数の和:606

約数の個数: 160

約数和(自身を含む): 2061189504

約数和(自身を除く): 1420900224

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 263, 317, 320, 384, 480, 512, 526, 634, 640, 768, 789, 951, 960, 1052, 1268, 1280, 1315, 1536, 1578, 1585, 1902, 1920, 2104, 2536, 2560, 2630, 3156, 3170, 3804, 3840, 3945, 4208, 4755, 5072, 5260, 6312, 6340, 7608, 7680, 7890, 8416, 9510, 10144, 10520, 12624, 12680, 15216, 15780, 16832, 19020, 20288, 21040, 25248, 25360, 30432, 31560, 33664, 38040, 40576, 42080, 50496, 50720, 60864, 63120, 67328, 76080, 81152, 83371, 84160, 100992, 101440, 121728, 126240, 134656, 152160, 162304, 166742, 168320, 201984, 202880, 243456, 250113, 252480, 304320, 333484, 336640, 403968, 405760, 416855, 486912, 500226, 504960, 608640, 666968, 673280, 811520, 833710, 1000452, 1009920, 1217280, 1250565, 1333936, 1667420, 2000904, 2019840, 2434560, 2501130, 2667872, 3334840, 4001808, 5002260, 5335744, 6669680, 8003616, 10004520, 10671488, 13339360, 16007232, 20009040, 21342976, 26678720, 32014464, 40018080, 42685952, 53357440, 64028928, 80036160, 106714880, 128057856, 160072320, 213429760, 320144640, 640289280]

約数ペア:

[(1, 640289280), (2, 320144640), (3, 213429760), (4, 160072320), (5, 128057856), (6, 106714880), (8, 80036160), (10, 64028928), (12, 53357440), (15, 42685952), (16, 40018080), (20, 32014464), (24, 26678720), (30, 21342976), (32, 20009040), (40, 16007232), (48, 13339360), (60, 10671488), (64, 10004520), (80, 8003616), (96, 6669680), (120, 5335744), (128, 5002260), (160, 4001808), (192, 3334840), (240, 2667872), (256, 2501130), (263, 2434560), (317, 2019840), (320, 2000904), (384, 1667420), (480, 1333936), (512, 1250565), (526, 1217280), (634, 1009920), (640, 1000452), (768, 833710), (789, 811520), (951, 673280), (960, 666968), (1052, 608640), (1268, 504960), (1280, 500226), (1315, 486912), (1536, 416855), (1578, 405760), (1585, 403968), (1902, 336640), (1920, 333484), (2104, 304320), (2536, 252480), (2560, 250113), (2630, 243456), (3156, 202880), (3170, 201984), (3804, 168320), (3840, 166742), (3945, 162304), (4208, 152160), (4755, 134656), (5072, 126240), (5260, 121728), (6312, 101440), (6340, 100992), (7608, 84160), (7680, 83371), (7890, 81152), (8416, 76080), (9510, 67328), (10144, 63120), (10520, 60864), (12624, 50720), (12680, 50496), (15216, 42080), (15780, 40576), (16832, 38040), (19020, 33664), (20288, 31560), (21040, 30432), (25248, 25360)]