1218929920

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:221

約数の個数: 288

約数和(自身を含む): 3461391360

約数和(自身を除く): 2242461440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 31, 32, 34, 40, 52, 62, 64, 65, 68, 80, 85, 104, 124, 128, 130, 136, 139, 155, 160, 170, 208, 221, 248, 256, 260, 272, 278, 310, 320, 340, 403, 416, 442, 496, 520, 527, 544, 556, 620, 640, 680, 695, 806, 832, 884, 992, 1040, 1054, 1088, 1105, 1112, 1240, 1280, 1360, 1390, 1612, 1664, 1768, 1807, 1984, 2015, 2080, 2108, 2176, 2210, 2224, 2363, 2480, 2635, 2720, 2780, 3224, 3328, 3536, 3614, 3968, 4030, 4160, 4216, 4309, 4352, 4420, 4448, 4726, 4960, 5270, 5440, 5560, 6448, 6851, 7072, 7228, 7936, 8060, 8320, 8432, 8618, 8840, 8896, 9035, 9452, 9920, 10540, 10880, 11120, 11815, 12896, 13702, 14144, 14456, 16120, 16640, 16864, 17236, 17680, 17792, 18070, 18904, 19840, 21080, 21545, 21760, 22240, 23630, 25792, 27404, 28288, 28912, 30719, 32240, 33728, 34255, 34472, 35360, 35584, 36140, 37808, 39680, 42160, 43090, 44480, 47260, 51584, 54808, 56017, 56576, 57824, 61438, 64480, 67456, 68510, 68944, 70720, 72280, 73253, 75616, 84320, 86180, 88960, 94520, 103168, 109616, 112034, 115648, 122876, 128960, 134912, 137020, 137888, 141440, 144560, 146506, 151232, 153595, 168640, 172360, 177920, 189040, 219232, 224068, 231296, 245752, 257920, 274040, 275776, 280085, 282880, 289120, 293012, 302464, 307190, 337280, 344720, 366265, 378080, 438464, 448136, 462592, 491504, 515840, 548080, 551552, 560170, 578240, 586024, 604928, 614380, 674560, 689440, 732530, 756160, 876928, 896272, 952289, 983008, 1096160, 1103104, 1120340, 1156480, 1172048, 1228760, 1378880, 1465060, 1512320, 1753856, 1792544, 1904578, 1966016, 2192320, 2240680, 2312960, 2344096, 2457520, 2757760, 2930120, 3024640, 3585088, 3809156, 3932032, 4384640, 4481360, 4688192, 4761445, 4915040, 5515520, 5860240, 7170176, 7618312, 7864064, 8769280, 8962720, 9376384, 9522890, 9830080, 11720480, 14340352, 15236624, 17925440, 18752768, 19045780, 19660160, 23440960, 30473248, 35850880, 38091560, 39320320, 46881920, 60946496, 71701760, 76183120, 93763840, 121892992, 152366240, 243785984, 304732480, 609464960, 1218929920]

約数ペア:

[(1, 1218929920), (2, 609464960), (4, 304732480), (5, 243785984), (8, 152366240), (10, 121892992), (13, 93763840), (16, 76183120), (17, 71701760), (20, 60946496), (26, 46881920), (31, 39320320), (32, 38091560), (34, 35850880), (40, 30473248), (52, 23440960), (62, 19660160), (64, 19045780), (65, 18752768), (68, 17925440), (80, 15236624), (85, 14340352), (104, 11720480), (124, 9830080), (128, 9522890), (130, 9376384), (136, 8962720), (139, 8769280), (155, 7864064), (160, 7618312), (170, 7170176), (208, 5860240), (221, 5515520), (248, 4915040), (256, 4761445), (260, 4688192), (272, 4481360), (278, 4384640), (310, 3932032), (320, 3809156), (340, 3585088), (403, 3024640), (416, 2930120), (442, 2757760), (496, 2457520), (520, 2344096), (527, 2312960), (544, 2240680), (556, 2192320), (620, 1966016), (640, 1904578), (680, 1792544), (695, 1753856), (806, 1512320), (832, 1465060), (884, 1378880), (992, 1228760), (1040, 1172048), (1054, 1156480), (1088, 1120340), (1105, 1103104), (1112, 1096160), (1240, 983008), (1280, 952289), (1360, 896272), (1390, 876928), (1612, 756160), (1664, 732530), (1768, 689440), (1807, 674560), (1984, 614380), (2015, 604928), (2080, 586024), (2108, 578240), (2176, 560170), (2210, 551552), (2224, 548080), (2363, 515840), (2480, 491504), (2635, 462592), (2720, 448136), (2780, 438464), (3224, 378080), (3328, 366265), (3536, 344720), (3614, 337280), (3968, 307190), (4030, 302464), (4160, 293012), (4216, 289120), (4309, 282880), (4352, 280085), (4420, 275776), (4448, 274040), (4726, 257920), (4960, 245752), (5270, 231296), (5440, 224068), (5560, 219232), (6448, 189040), (6851, 177920), (7072, 172360), (7228, 168640), (7936, 153595), (8060, 151232), (8320, 146506), (8432, 144560), (8618, 141440), (8840, 137888), (8896, 137020), (9035, 134912), (9452, 128960), (9920, 122876), (10540, 115648), (10880, 112034), (11120, 109616), (11815, 103168), (12896, 94520), (13702, 88960), (14144, 86180), (14456, 84320), (16120, 75616), (16640, 73253), (16864, 72280), (17236, 70720), (17680, 68944), (17792, 68510), (18070, 67456), (18904, 64480), (19840, 61438), (21080, 57824), (21545, 56576), (21760, 56017), (22240, 54808), (23630, 51584), (25792, 47260), (27404, 44480), (28288, 43090), (28912, 42160), (30719, 39680), (32240, 37808), (33728, 36140), (34255, 35584), (34472, 35360)]