About the Number

388406340

388406339 ← → 388406341

2進数表記:10111001001101001110001000100

漢数字表記:三億八千八百四十万六千三百四十

素因数分解:

2 2 × 3 5 × 5 1 × 7 3 × 233 1

素因数の和:278
約数の個数: 288
約数和(自身を含む): 1430956800
約数和(自身を除く): 1042550460

約数列:
[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 233, 243, 245, 252, 270, 294, 315, 324, 343, 378, 405, 420, 441, 466, 486, 490, 540, 567, 588, 630, 686, 699, 735, 756, 810, 882, 932, 945, 972, 980, 1029, 1134, 1165, 1215, 1260, 1323, 1372, 1398, 1470, 1620, 1631, 1701, 1715, 1764, 1890, 2058, 2097, 2205, 2268, 2330, 2430, 2646, 2796, 2835, 2940, 3087, 3262, 3402, 3430, 3495, 3780, 3969, 4116, 4194, 4410, 4660, 4860, 4893, 5145, 5292, 5670, 6174, 6291, 6524, 6615, 6804, 6860, 6990, 7938, 8155, 8388, 8505, 8820, 9261, 9786, 10290, 10485, 11340, 11417, 11907, 12348, 12582, 13230, 13980, 14679, 15435, 15876, 16310, 17010, 18522, 18873, 19572, 19845, 20580, 20970, 22834, 23814, 24465, 25164, 26460, 27783, 29358, 30870, 31455, 32620, 34020, 34251, 37044, 37746, 39690, 41940, 44037, 45668, 46305, 47628, 48930, 55566, 56619, 57085, 58716, 59535, 61740, 62910, 68502, 73395, 75492, 79380, 79919, 83349, 88074, 92610, 94365, 97860, 102753, 111132, 113238, 114170, 119070, 125820, 132111, 137004, 138915, 146790, 159838, 166698, 171255, 176148, 185220, 188730, 205506, 220185, 226476, 228340, 238140, 239757, 264222, 277830, 283095, 293580, 308259, 319676, 333396, 342510, 377460, 396333, 399595, 411012, 416745, 440370, 479514, 513765, 528444, 555660, 566190, 616518, 660555, 685020, 719271, 792666, 799190, 833490, 880740, 924777, 959028, 1027530, 1132380, 1198785, 1233036, 1321110, 1438542, 1541295, 1585332, 1598380, 1666980, 1849554, 1981665, 2055060, 2157813, 2397570, 2642220, 2774331, 2877084, 3082590, 3596355, 3699108, 3963330, 4315626, 4623885, 4795140, 5548662, 6165180, 6473439, 7192710, 7926660, 8631252, 9247770, 10789065, 11097324, 12946878, 13871655, 14385420, 18495540, 19420317, 21578130, 25893756, 27743310, 32367195, 38840634, 43156260, 55486620, 64734390, 77681268, 97101585, 129468780, 194203170, 388406340]

約数ペア:
[(1, 388406340), (2, 194203170), (3, 129468780), (4, 97101585), (5, 77681268), (6, 64734390), (7, 55486620), (9, 43156260), (10, 38840634), (12, 32367195), (14, 27743310), (15, 25893756), (18, 21578130), (20, 19420317), (21, 18495540), (27, 14385420), (28, 13871655), (30, 12946878), (35, 11097324), (36, 10789065), (42, 9247770), (45, 8631252), (49, 7926660), (54, 7192710), (60, 6473439), (63, 6165180), (70, 5548662), (81, 4795140), (84, 4623885), (90, 4315626), (98, 3963330), (105, 3699108), (108, 3596355), (126, 3082590), (135, 2877084), (140, 2774331), (147, 2642220), (162, 2397570), (180, 2157813), (189, 2055060), (196, 1981665), (210, 1849554), (233, 1666980), (243, 1598380), (245, 1585332), (252, 1541295), (270, 1438542), (294, 1321110), (315, 1233036), (324, 1198785), (343, 1132380), (378, 1027530), (405, 959028), (420, 924777), (441, 880740), (466, 833490), (486, 799190), (490, 792666), (540, 719271), (567, 685020), (588, 660555), (630, 616518), (686, 566190), (699, 555660), (735, 528444), (756, 513765), (810, 479514), (882, 440370), (932, 416745), (945, 411012), (972, 399595), (980, 396333), (1029, 377460), (1134, 342510), (1165, 333396), (1215, 319676), (1260, 308259), (1323, 293580), (1372, 283095), (1398, 277830), (1470, 264222), (1620, 239757), (1631, 238140), (1701, 228340), (1715, 226476), (1764, 220185), (1890, 205506), (2058, 188730), (2097, 185220), (2205, 176148), (2268, 171255), (2330, 166698), (2430, 159838), (2646, 146790), (2796, 138915), (2835, 137004), (2940, 132111), (3087, 125820), (3262, 119070), (3402, 114170), (3430, 113238), (3495, 111132), (3780, 102753), (3969, 97860), (4116, 94365), (4194, 92610), (4410, 88074), (4660, 83349), (4860, 79919), (4893, 79380), (5145, 75492), (5292, 73395), (5670, 68502), (6174, 62910), (6291, 61740), (6524, 59535), (6615, 58716), (6804, 57085), (6860, 56619), (6990, 55566), (7938, 48930), (8155, 47628), (8388, 46305), (8505, 45668), (8820, 44037), (9261, 41940), (9786, 39690), (10290, 37746), (10485, 37044), (11340, 34251), (11417, 34020), (11907, 32620), (12348, 31455), (12582, 30870), (13230, 29358), (13980, 27783), (14679, 26460), (15435, 25164), (15876, 24465), (16310, 23814), (17010, 22834), (18522, 20970), (18873, 20580), (19572, 19845)]

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