257634720

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:508

約数の個数: 288

約数和(自身を含む): 1023684480

約数和(自身を除く): 766049760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 61, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 122, 126, 140, 144, 160, 168, 180, 183, 210, 224, 240, 244, 252, 280, 288, 305, 315, 336, 360, 366, 419, 420, 427, 480, 488, 504, 549, 560, 610, 630, 672, 720, 732, 838, 840, 854, 915, 976, 1008, 1098, 1120, 1220, 1257, 1260, 1281, 1440, 1464, 1676, 1680, 1708, 1830, 1952, 2016, 2095, 2135, 2196, 2440, 2514, 2520, 2562, 2745, 2928, 2933, 3352, 3360, 3416, 3660, 3771, 3843, 4190, 4270, 4392, 4880, 5028, 5040, 5124, 5490, 5856, 5866, 6285, 6405, 6704, 6832, 7320, 7542, 7686, 8380, 8540, 8784, 8799, 9760, 10056, 10080, 10248, 10980, 11732, 12570, 12810, 13408, 13664, 14640, 14665, 15084, 15372, 16760, 17080, 17568, 17598, 18855, 19215, 20112, 20496, 21960, 23464, 25140, 25559, 25620, 26397, 29280, 29330, 30168, 30744, 33520, 34160, 35196, 37710, 38430, 40224, 40992, 43920, 43995, 46928, 50280, 51118, 51240, 52794, 58660, 60336, 61488, 67040, 68320, 70392, 75420, 76677, 76860, 87840, 87990, 93856, 100560, 102236, 102480, 105588, 117320, 120672, 122976, 127795, 131985, 140784, 150840, 153354, 153720, 175980, 178913, 201120, 204472, 204960, 211176, 230031, 234640, 255590, 263970, 281568, 301680, 306708, 307440, 351960, 357826, 383385, 408944, 422352, 460062, 469280, 511180, 527940, 536739, 603360, 613416, 614880, 703920, 715652, 766770, 817888, 844704, 894565, 920124, 1022360, 1055880, 1073478, 1150155, 1226832, 1407840, 1431304, 1533540, 1610217, 1789130, 1840248, 2044720, 2111760, 2146956, 2300310, 2453664, 2683695, 2862608, 3067080, 3220434, 3578260, 3680496, 4089440, 4223520, 4293912, 4600620, 5367390, 5725216, 6134160, 6440868, 7156520, 7360992, 8051085, 8587824, 9201240, 10734780, 12268320, 12881736, 14313040, 16102170, 17175648, 18402480, 21469560, 25763472, 28626080, 32204340, 36804960, 42939120, 51526944, 64408680, 85878240, 128817360, 257634720]

約数ペア:

[(1, 257634720), (2, 128817360), (3, 85878240), (4, 64408680), (5, 51526944), (6, 42939120), (7, 36804960), (8, 32204340), (9, 28626080), (10, 25763472), (12, 21469560), (14, 18402480), (15, 17175648), (16, 16102170), (18, 14313040), (20, 12881736), (21, 12268320), (24, 10734780), (28, 9201240), (30, 8587824), (32, 8051085), (35, 7360992), (36, 7156520), (40, 6440868), (42, 6134160), (45, 5725216), (48, 5367390), (56, 4600620), (60, 4293912), (61, 4223520), (63, 4089440), (70, 3680496), (72, 3578260), (80, 3220434), (84, 3067080), (90, 2862608), (96, 2683695), (105, 2453664), (112, 2300310), (120, 2146956), (122, 2111760), (126, 2044720), (140, 1840248), (144, 1789130), (160, 1610217), (168, 1533540), (180, 1431304), (183, 1407840), (210, 1226832), (224, 1150155), (240, 1073478), (244, 1055880), (252, 1022360), (280, 920124), (288, 894565), (305, 844704), (315, 817888), (336, 766770), (360, 715652), (366, 703920), (419, 614880), (420, 613416), (427, 603360), (480, 536739), (488, 527940), (504, 511180), (549, 469280), (560, 460062), (610, 422352), (630, 408944), (672, 383385), (720, 357826), (732, 351960), (838, 307440), (840, 306708), (854, 301680), (915, 281568), (976, 263970), (1008, 255590), (1098, 234640), (1120, 230031), (1220, 211176), (1257, 204960), (1260, 204472), (1281, 201120), (1440, 178913), (1464, 175980), (1676, 153720), (1680, 153354), (1708, 150840), (1830, 140784), (1952, 131985), (2016, 127795), (2095, 122976), (2135, 120672), (2196, 117320), (2440, 105588), (2514, 102480), (2520, 102236), (2562, 100560), (2745, 93856), (2928, 87990), (2933, 87840), (3352, 76860), (3360, 76677), (3416, 75420), (3660, 70392), (3771, 68320), (3843, 67040), (4190, 61488), (4270, 60336), (4392, 58660), (4880, 52794), (5028, 51240), (5040, 51118), (5124, 50280), (5490, 46928), (5856, 43995), (5866, 43920), (6285, 40992), (6405, 40224), (6704, 38430), (6832, 37710), (7320, 35196), (7542, 34160), (7686, 33520), (8380, 30744), (8540, 30168), (8784, 29330), (8799, 29280), (9760, 26397), (10056, 25620), (10080, 25559), (10248, 25140), (10980, 23464), (11732, 21960), (12570, 20496), (12810, 20112), (13408, 19215), (13664, 18855), (14640, 17598), (14665, 17568), (15084, 17080), (15372, 16760)]