About the Number

397808640

397808639 ← → 397808641

2進数表記:10111101101100001010000000000

漢数字表記:三億九千七百八十万八千六百四十

素因数分解:

2 10 × 3 2 × 5 1 × 89 1 × 97 1

素因数の和:217
約数の個数: 264
約数和(自身を含む): 1408254120
約数和(自身を除く): 1010445480

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 89, 90, 96, 97, 120, 128, 144, 160, 178, 180, 192, 194, 240, 256, 267, 288, 291, 320, 356, 360, 384, 388, 445, 480, 485, 512, 534, 576, 582, 640, 712, 720, 768, 776, 801, 873, 890, 960, 970, 1024, 1068, 1152, 1164, 1280, 1335, 1424, 1440, 1455, 1536, 1552, 1602, 1746, 1780, 1920, 1940, 2136, 2304, 2328, 2560, 2670, 2848, 2880, 2910, 3072, 3104, 3204, 3492, 3560, 3840, 3880, 4005, 4272, 4365, 4608, 4656, 5120, 5340, 5696, 5760, 5820, 6208, 6408, 6984, 7120, 7680, 7760, 8010, 8544, 8633, 8730, 9216, 9312, 10680, 11392, 11520, 11640, 12416, 12816, 13968, 14240, 15360, 15520, 16020, 17088, 17266, 17460, 18624, 21360, 22784, 23040, 23280, 24832, 25632, 25899, 27936, 28480, 31040, 32040, 34176, 34532, 34920, 37248, 42720, 43165, 45568, 46080, 46560, 49664, 51264, 51798, 55872, 56960, 62080, 64080, 68352, 69064, 69840, 74496, 77697, 85440, 86330, 91136, 93120, 99328, 102528, 103596, 111744, 113920, 124160, 128160, 129495, 136704, 138128, 139680, 148992, 155394, 170880, 172660, 186240, 205056, 207192, 223488, 227840, 248320, 256320, 258990, 273408, 276256, 279360, 297984, 310788, 341760, 345320, 372480, 388485, 410112, 414384, 446976, 455680, 496640, 512640, 517980, 552512, 558720, 621576, 683520, 690640, 744960, 776970, 820224, 828768, 893952, 1025280, 1035960, 1105024, 1117440, 1243152, 1367040, 1381280, 1489920, 1553940, 1657536, 2050560, 2071920, 2210048, 2234880, 2486304, 2762560, 3107880, 3315072, 4101120, 4143840, 4420096, 4469760, 4972608, 5525120, 6215760, 6630144, 8287680, 8840192, 9945216, 11050240, 12431520, 13260288, 16575360, 19890432, 22100480, 24863040, 26520576, 33150720, 39780864, 44200960, 49726080, 66301440, 79561728, 99452160, 132602880, 198904320, 397808640]

約数ペア:
[(1, 397808640), (2, 198904320), (3, 132602880), (4, 99452160), (5, 79561728), (6, 66301440), (8, 49726080), (9, 44200960), (10, 39780864), (12, 33150720), (15, 26520576), (16, 24863040), (18, 22100480), (20, 19890432), (24, 16575360), (30, 13260288), (32, 12431520), (36, 11050240), (40, 9945216), (45, 8840192), (48, 8287680), (60, 6630144), (64, 6215760), (72, 5525120), (80, 4972608), (89, 4469760), (90, 4420096), (96, 4143840), (97, 4101120), (120, 3315072), (128, 3107880), (144, 2762560), (160, 2486304), (178, 2234880), (180, 2210048), (192, 2071920), (194, 2050560), (240, 1657536), (256, 1553940), (267, 1489920), (288, 1381280), (291, 1367040), (320, 1243152), (356, 1117440), (360, 1105024), (384, 1035960), (388, 1025280), (445, 893952), (480, 828768), (485, 820224), (512, 776970), (534, 744960), (576, 690640), (582, 683520), (640, 621576), (712, 558720), (720, 552512), (768, 517980), (776, 512640), (801, 496640), (873, 455680), (890, 446976), (960, 414384), (970, 410112), (1024, 388485), (1068, 372480), (1152, 345320), (1164, 341760), (1280, 310788), (1335, 297984), (1424, 279360), (1440, 276256), (1455, 273408), (1536, 258990), (1552, 256320), (1602, 248320), (1746, 227840), (1780, 223488), (1920, 207192), (1940, 205056), (2136, 186240), (2304, 172660), (2328, 170880), (2560, 155394), (2670, 148992), (2848, 139680), (2880, 138128), (2910, 136704), (3072, 129495), (3104, 128160), (3204, 124160), (3492, 113920), (3560, 111744), (3840, 103596), (3880, 102528), (4005, 99328), (4272, 93120), (4365, 91136), (4608, 86330), (4656, 85440), (5120, 77697), (5340, 74496), (5696, 69840), (5760, 69064), (5820, 68352), (6208, 64080), (6408, 62080), (6984, 56960), (7120, 55872), (7680, 51798), (7760, 51264), (8010, 49664), (8544, 46560), (8633, 46080), (8730, 45568), (9216, 43165), (9312, 42720), (10680, 37248), (11392, 34920), (11520, 34532), (11640, 34176), (12416, 32040), (12816, 31040), (13968, 28480), (14240, 27936), (15360, 25899), (15520, 25632), (16020, 24832), (17088, 23280), (17266, 23040), (17460, 22784), (18624, 21360)]

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