639997440

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{167}}^1\times {\mathrm{499}}^1$

素因数の和:692

約数の個数: 160

約数和(自身を含む): 2062368000

約数和(自身を除く): 1422370560

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, 167, 192, 240, 256, 320, 334, 384, 480, 499, 501, 512, 640, 668, 768, 835, 960, 998, 1002, 1280, 1336, 1497, 1536, 1670, 1920, 1996, 2004, 2495, 2505, 2560, 2672, 2994, 3340, 3840, 3992, 4008, 4990, 5010, 5344, 5988, 6680, 7485, 7680, 7984, 8016, 9980, 10020, 10688, 11976, 13360, 14970, 15968, 16032, 19960, 20040, 21376, 23952, 26720, 29940, 31936, 32064, 39920, 40080, 42752, 47904, 53440, 59880, 63872, 64128, 79840, 80160, 83333, 85504, 95808, 106880, 119760, 127744, 128256, 159680, 160320, 166666, 191616, 213760, 239520, 249999, 255488, 256512, 319360, 320640, 333332, 383232, 416665, 427520, 479040, 499998, 638720, 641280, 666664, 766464, 833330, 958080, 999996, 1249995, 1277440, 1282560, 1333328, 1666660, 1916160, 1999992, 2499990, 2666656, 3333320, 3832320, 3999984, 4999980, 5333312, 6666640, 7999968, 9999960, 10666624, 13333280, 15999936, 19999920, 21333248, 26666560, 31999872, 39999840, 42666496, 53333120, 63999744, 79999680, 106666240, 127999488, 159999360, 213332480, 319998720, 639997440]

約数ペア:

[(1, 639997440), (2, 319998720), (3, 213332480), (4, 159999360), (5, 127999488), (6, 106666240), (8, 79999680), (10, 63999744), (12, 53333120), (15, 42666496), (16, 39999840), (20, 31999872), (24, 26666560), (30, 21333248), (32, 19999920), (40, 15999936), (48, 13333280), (60, 10666624), (64, 9999960), (80, 7999968), (96, 6666640), (120, 5333312), (128, 4999980), (160, 3999984), (167, 3832320), (192, 3333320), (240, 2666656), (256, 2499990), (320, 1999992), (334, 1916160), (384, 1666660), (480, 1333328), (499, 1282560), (501, 1277440), (512, 1249995), (640, 999996), (668, 958080), (768, 833330), (835, 766464), (960, 666664), (998, 641280), (1002, 638720), (1280, 499998), (1336, 479040), (1497, 427520), (1536, 416665), (1670, 383232), (1920, 333332), (1996, 320640), (2004, 319360), (2495, 256512), (2505, 255488), (2560, 249999), (2672, 239520), (2994, 213760), (3340, 191616), (3840, 166666), (3992, 160320), (4008, 159680), (4990, 128256), (5010, 127744), (5344, 119760), (5988, 106880), (6680, 95808), (7485, 85504), (7680, 83333), (7984, 80160), (8016, 79840), (9980, 64128), (10020, 63872), (10688, 59880), (11976, 53440), (13360, 47904), (14970, 42752), (15968, 40080), (16032, 39920), (19960, 32064), (20040, 31936), (21376, 29940), (23952, 26720)]