400554720

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1055

約数の個数: 240

約数和(自身を含む): 1460688768

約数和(自身を除く): 1060134048

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 32, 36, 40, 45, 48, 54, 60, 62, 72, 80, 81, 90, 93, 96, 108, 120, 124, 135, 144, 155, 160, 162, 180, 186, 216, 240, 248, 270, 279, 288, 310, 324, 360, 372, 405, 432, 465, 480, 496, 540, 558, 620, 648, 720, 744, 810, 837, 864, 930, 992, 997, 1080, 1116, 1240, 1296, 1395, 1440, 1488, 1620, 1674, 1860, 1994, 2160, 2232, 2480, 2511, 2592, 2790, 2976, 2991, 3240, 3348, 3720, 3988, 4185, 4320, 4464, 4960, 4985, 5022, 5580, 5982, 6480, 6696, 7440, 7976, 8370, 8928, 8973, 9970, 10044, 11160, 11964, 12555, 12960, 13392, 14880, 14955, 15952, 16740, 17946, 19940, 20088, 22320, 23928, 25110, 26784, 26919, 29910, 30907, 31904, 33480, 35892, 39880, 40176, 44640, 44865, 47856, 50220, 53838, 59820, 61814, 66960, 71784, 79760, 80352, 80757, 89730, 92721, 95712, 100440, 107676, 119640, 123628, 133920, 134595, 143568, 154535, 159520, 161514, 179460, 185442, 200880, 215352, 239280, 247256, 269190, 278163, 287136, 309070, 323028, 358920, 370884, 401760, 403785, 430704, 463605, 478560, 494512, 538380, 556326, 618140, 646056, 717840, 741768, 807570, 834489, 861408, 927210, 989024, 1076760, 1112652, 1236280, 1292112, 1390815, 1435680, 1483536, 1615140, 1668978, 1854420, 2153520, 2225304, 2472560, 2503467, 2584224, 2781630, 2967072, 3230280, 3337956, 3708840, 4172445, 4307040, 4450608, 4945120, 5006934, 5563260, 6460560, 6675912, 7417680, 8344890, 8901216, 10013868, 11126520, 12517335, 12921120, 13351824, 14835360, 16689780, 20027736, 22253040, 25034670, 26703648, 33379560, 40055472, 44506080, 50069340, 66759120, 80110944, 100138680, 133518240, 200277360, 400554720]

約数ペア:

[(1, 400554720), (2, 200277360), (3, 133518240), (4, 100138680), (5, 80110944), (6, 66759120), (8, 50069340), (9, 44506080), (10, 40055472), (12, 33379560), (15, 26703648), (16, 25034670), (18, 22253040), (20, 20027736), (24, 16689780), (27, 14835360), (30, 13351824), (31, 12921120), (32, 12517335), (36, 11126520), (40, 10013868), (45, 8901216), (48, 8344890), (54, 7417680), (60, 6675912), (62, 6460560), (72, 5563260), (80, 5006934), (81, 4945120), (90, 4450608), (93, 4307040), (96, 4172445), (108, 3708840), (120, 3337956), (124, 3230280), (135, 2967072), (144, 2781630), (155, 2584224), (160, 2503467), (162, 2472560), (180, 2225304), (186, 2153520), (216, 1854420), (240, 1668978), (248, 1615140), (270, 1483536), (279, 1435680), (288, 1390815), (310, 1292112), (324, 1236280), (360, 1112652), (372, 1076760), (405, 989024), (432, 927210), (465, 861408), (480, 834489), (496, 807570), (540, 741768), (558, 717840), (620, 646056), (648, 618140), (720, 556326), (744, 538380), (810, 494512), (837, 478560), (864, 463605), (930, 430704), (992, 403785), (997, 401760), (1080, 370884), (1116, 358920), (1240, 323028), (1296, 309070), (1395, 287136), (1440, 278163), (1488, 269190), (1620, 247256), (1674, 239280), (1860, 215352), (1994, 200880), (2160, 185442), (2232, 179460), (2480, 161514), (2511, 159520), (2592, 154535), (2790, 143568), (2976, 134595), (2991, 133920), (3240, 123628), (3348, 119640), (3720, 107676), (3988, 100440), (4185, 95712), (4320, 92721), (4464, 89730), (4960, 80757), (4985, 80352), (5022, 79760), (5580, 71784), (5982, 66960), (6480, 61814), (6696, 59820), (7440, 53838), (7976, 50220), (8370, 47856), (8928, 44865), (8973, 44640), (9970, 40176), (10044, 39880), (11160, 35892), (11964, 33480), (12555, 31904), (12960, 30907), (13392, 29910), (14880, 26919), (14955, 26784), (15952, 25110), (16740, 23928), (17946, 22320), (19940, 20088)]