257501440

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{991}}^1$

素因数の和:1048

約数の個数: 144

約数和(自身を含む): 729953280

約数和(自身を除く): 472451840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 64, 70, 80, 112, 116, 128, 140, 145, 160, 203, 224, 232, 256, 280, 290, 320, 406, 448, 464, 560, 580, 640, 812, 896, 928, 991, 1015, 1120, 1160, 1280, 1624, 1792, 1856, 1982, 2030, 2240, 2320, 3248, 3712, 3964, 4060, 4480, 4640, 4955, 6496, 6937, 7424, 7928, 8120, 8960, 9280, 9910, 12992, 13874, 15856, 16240, 18560, 19820, 25984, 27748, 28739, 31712, 32480, 34685, 37120, 39640, 51968, 55496, 57478, 63424, 64960, 69370, 79280, 110992, 114956, 126848, 129920, 138740, 143695, 158560, 201173, 221984, 229912, 253696, 259840, 277480, 287390, 317120, 402346, 443968, 459824, 554960, 574780, 634240, 804692, 887936, 919648, 1005865, 1109920, 1149560, 1268480, 1609384, 1775872, 1839296, 2011730, 2219840, 2299120, 3218768, 3678592, 4023460, 4439680, 4598240, 6437536, 7357184, 8046920, 8879360, 9196480, 12875072, 16093840, 18392960, 25750144, 32187680, 36785920, 51500288, 64375360, 128750720, 257501440]

約数ペア:

[(1, 257501440), (2, 128750720), (4, 64375360), (5, 51500288), (7, 36785920), (8, 32187680), (10, 25750144), (14, 18392960), (16, 16093840), (20, 12875072), (28, 9196480), (29, 8879360), (32, 8046920), (35, 7357184), (40, 6437536), (56, 4598240), (58, 4439680), (64, 4023460), (70, 3678592), (80, 3218768), (112, 2299120), (116, 2219840), (128, 2011730), (140, 1839296), (145, 1775872), (160, 1609384), (203, 1268480), (224, 1149560), (232, 1109920), (256, 1005865), (280, 919648), (290, 887936), (320, 804692), (406, 634240), (448, 574780), (464, 554960), (560, 459824), (580, 443968), (640, 402346), (812, 317120), (896, 287390), (928, 277480), (991, 259840), (1015, 253696), (1120, 229912), (1160, 221984), (1280, 201173), (1624, 158560), (1792, 143695), (1856, 138740), (1982, 129920), (2030, 126848), (2240, 114956), (2320, 110992), (3248, 79280), (3712, 69370), (3964, 64960), (4060, 63424), (4480, 57478), (4640, 55496), (4955, 51968), (6496, 39640), (6937, 37120), (7424, 34685), (7928, 32480), (8120, 31712), (8960, 28739), (9280, 27748), (9910, 25984), (12992, 19820), (13874, 18560), (15856, 16240)]