639219840

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:467

約数の個数: 256

約数和(自身を含む): 2350080000

約数和(自身を除く): 1710860160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 199, 210, 224, 239, 240, 280, 320, 336, 384, 398, 420, 448, 478, 480, 560, 597, 640, 672, 717, 796, 840, 896, 956, 960, 995, 1120, 1194, 1195, 1344, 1393, 1434, 1592, 1673, 1680, 1912, 1920, 1990, 2240, 2388, 2390, 2688, 2786, 2868, 2985, 3184, 3346, 3360, 3585, 3824, 3980, 4179, 4480, 4776, 4780, 5019, 5572, 5736, 5970, 6368, 6692, 6720, 6965, 7170, 7648, 7960, 8358, 8365, 9552, 9560, 10038, 11144, 11472, 11940, 12736, 13384, 13440, 13930, 14340, 15296, 15920, 16716, 16730, 19104, 19120, 20076, 20895, 22288, 22944, 23880, 25095, 25472, 26768, 27860, 28680, 30592, 31840, 33432, 33460, 38208, 38240, 40152, 41790, 44576, 45888, 47561, 47760, 50190, 53536, 55720, 57360, 63680, 66864, 66920, 76416, 76480, 80304, 83580, 89152, 91776, 95122, 95520, 100380, 107072, 111440, 114720, 127360, 133728, 133840, 142683, 152960, 160608, 167160, 178304, 190244, 191040, 200760, 214144, 222880, 229440, 237805, 267456, 267680, 285366, 321216, 332927, 334320, 380488, 382080, 401520, 445760, 458880, 475610, 534912, 535360, 570732, 642432, 665854, 668640, 713415, 760976, 803040, 891520, 951220, 998781, 1070720, 1141464, 1331708, 1337280, 1426830, 1521952, 1606080, 1664635, 1902440, 1997562, 2282928, 2663416, 2674560, 2853660, 3043904, 3212160, 3329270, 3804880, 3995124, 4565856, 4993905, 5326832, 5707320, 6087808, 6658540, 7609760, 7990248, 9131712, 9987810, 10653664, 11414640, 13317080, 15219520, 15980496, 18263424, 19975620, 21307328, 22829280, 26634160, 30439040, 31960992, 39951240, 42614656, 45658560, 53268320, 63921984, 79902480, 91317120, 106536640, 127843968, 159804960, 213073280, 319609920, 639219840]

約数ペア:

[(1, 639219840), (2, 319609920), (3, 213073280), (4, 159804960), (5, 127843968), (6, 106536640), (7, 91317120), (8, 79902480), (10, 63921984), (12, 53268320), (14, 45658560), (15, 42614656), (16, 39951240), (20, 31960992), (21, 30439040), (24, 26634160), (28, 22829280), (30, 21307328), (32, 19975620), (35, 18263424), (40, 15980496), (42, 15219520), (48, 13317080), (56, 11414640), (60, 10653664), (64, 9987810), (70, 9131712), (80, 7990248), (84, 7609760), (96, 6658540), (105, 6087808), (112, 5707320), (120, 5326832), (128, 4993905), (140, 4565856), (160, 3995124), (168, 3804880), (192, 3329270), (199, 3212160), (210, 3043904), (224, 2853660), (239, 2674560), (240, 2663416), (280, 2282928), (320, 1997562), (336, 1902440), (384, 1664635), (398, 1606080), (420, 1521952), (448, 1426830), (478, 1337280), (480, 1331708), (560, 1141464), (597, 1070720), (640, 998781), (672, 951220), (717, 891520), (796, 803040), (840, 760976), (896, 713415), (956, 668640), (960, 665854), (995, 642432), (1120, 570732), (1194, 535360), (1195, 534912), (1344, 475610), (1393, 458880), (1434, 445760), (1592, 401520), (1673, 382080), (1680, 380488), (1912, 334320), (1920, 332927), (1990, 321216), (2240, 285366), (2388, 267680), (2390, 267456), (2688, 237805), (2786, 229440), (2868, 222880), (2985, 214144), (3184, 200760), (3346, 191040), (3360, 190244), (3585, 178304), (3824, 167160), (3980, 160608), (4179, 152960), (4480, 142683), (4776, 133840), (4780, 133728), (5019, 127360), (5572, 114720), (5736, 111440), (5970, 107072), (6368, 100380), (6692, 95520), (6720, 95122), (6965, 91776), (7170, 89152), (7648, 83580), (7960, 80304), (8358, 76480), (8365, 76416), (9552, 66920), (9560, 66864), (10038, 63680), (11144, 57360), (11472, 55720), (11940, 53536), (12736, 50190), (13384, 47760), (13440, 47561), (13930, 45888), (14340, 44576), (15296, 41790), (15920, 40152), (16716, 38240), (16730, 38208), (19104, 33460), (19120, 33432), (20076, 31840), (20895, 30592), (22288, 28680), (22944, 27860), (23880, 26768), (25095, 25472)]