257249280

素因数分解:

$2^{12}\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:164

約数の個数: 208

約数和(自身を含む): 849242880

約数和(自身を除く): 591993600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 53, 60, 64, 79, 80, 96, 106, 120, 128, 158, 159, 160, 192, 212, 237, 240, 256, 265, 316, 318, 320, 384, 395, 424, 474, 480, 512, 530, 632, 636, 640, 768, 790, 795, 848, 948, 960, 1024, 1060, 1185, 1264, 1272, 1280, 1536, 1580, 1590, 1696, 1896, 1920, 2048, 2120, 2370, 2528, 2544, 2560, 3072, 3160, 3180, 3392, 3792, 3840, 4096, 4187, 4240, 4740, 5056, 5088, 5120, 6144, 6320, 6360, 6784, 7584, 7680, 8374, 8480, 9480, 10112, 10176, 10240, 12288, 12561, 12640, 12720, 13568, 15168, 15360, 16748, 16960, 18960, 20224, 20352, 20480, 20935, 25122, 25280, 25440, 27136, 30336, 30720, 33496, 33920, 37920, 40448, 40704, 41870, 50244, 50560, 50880, 54272, 60672, 61440, 62805, 66992, 67840, 75840, 80896, 81408, 83740, 100488, 101120, 101760, 108544, 121344, 125610, 133984, 135680, 151680, 161792, 162816, 167480, 200976, 202240, 203520, 217088, 242688, 251220, 267968, 271360, 303360, 323584, 325632, 334960, 401952, 404480, 407040, 485376, 502440, 535936, 542720, 606720, 651264, 669920, 803904, 808960, 814080, 970752, 1004880, 1071872, 1085440, 1213440, 1339840, 1607808, 1617920, 1628160, 2009760, 2143744, 2426880, 2679680, 3215616, 3256320, 4019520, 4287488, 4853760, 5359360, 6431232, 8039040, 8574976, 10718720, 12862464, 16078080, 17149952, 21437440, 25724928, 32156160, 42874880, 51449856, 64312320, 85749760, 128624640, 257249280]

約数ペア:

[(1, 257249280), (2, 128624640), (3, 85749760), (4, 64312320), (5, 51449856), (6, 42874880), (8, 32156160), (10, 25724928), (12, 21437440), (15, 17149952), (16, 16078080), (20, 12862464), (24, 10718720), (30, 8574976), (32, 8039040), (40, 6431232), (48, 5359360), (53, 4853760), (60, 4287488), (64, 4019520), (79, 3256320), (80, 3215616), (96, 2679680), (106, 2426880), (120, 2143744), (128, 2009760), (158, 1628160), (159, 1617920), (160, 1607808), (192, 1339840), (212, 1213440), (237, 1085440), (240, 1071872), (256, 1004880), (265, 970752), (316, 814080), (318, 808960), (320, 803904), (384, 669920), (395, 651264), (424, 606720), (474, 542720), (480, 535936), (512, 502440), (530, 485376), (632, 407040), (636, 404480), (640, 401952), (768, 334960), (790, 325632), (795, 323584), (848, 303360), (948, 271360), (960, 267968), (1024, 251220), (1060, 242688), (1185, 217088), (1264, 203520), (1272, 202240), (1280, 200976), (1536, 167480), (1580, 162816), (1590, 161792), (1696, 151680), (1896, 135680), (1920, 133984), (2048, 125610), (2120, 121344), (2370, 108544), (2528, 101760), (2544, 101120), (2560, 100488), (3072, 83740), (3160, 81408), (3180, 80896), (3392, 75840), (3792, 67840), (3840, 66992), (4096, 62805), (4187, 61440), (4240, 60672), (4740, 54272), (5056, 50880), (5088, 50560), (5120, 50244), (6144, 41870), (6320, 40704), (6360, 40448), (6784, 37920), (7584, 33920), (7680, 33496), (8374, 30720), (8480, 30336), (9480, 27136), (10112, 25440), (10176, 25280), (10240, 25122), (12288, 20935), (12561, 20480), (12640, 20352), (12720, 20224), (13568, 18960), (15168, 16960), (15360, 16748)]