81262720

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1$

素因数の和:151

約数の個数: 256

約数和(自身を含む): 259096320

約数和(自身を除く): 177833600

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 17, 20, 22, 28, 32, 34, 35, 40, 44, 55, 56, 64, 68, 70, 77, 80, 85, 88, 97, 110, 112, 119, 128, 136, 140, 154, 160, 170, 176, 187, 194, 220, 224, 238, 272, 280, 308, 320, 340, 352, 374, 385, 388, 440, 448, 476, 485, 544, 560, 595, 616, 640, 679, 680, 704, 748, 770, 776, 880, 896, 935, 952, 970, 1067, 1088, 1120, 1190, 1232, 1309, 1358, 1360, 1408, 1496, 1540, 1552, 1649, 1760, 1870, 1904, 1940, 2134, 2176, 2240, 2380, 2464, 2618, 2716, 2720, 2992, 3080, 3104, 3298, 3395, 3520, 3740, 3808, 3880, 4268, 4480, 4760, 4928, 5236, 5335, 5432, 5440, 5984, 6160, 6208, 6545, 6596, 6790, 7040, 7469, 7480, 7616, 7760, 8245, 8536, 9520, 9856, 10472, 10670, 10864, 10880, 11543, 11968, 12320, 12416, 13090, 13192, 13580, 14938, 14960, 15232, 15520, 16490, 17072, 18139, 19040, 20944, 21340, 21728, 23086, 23936, 24640, 26180, 26384, 27160, 29876, 29920, 31040, 32980, 34144, 36278, 37345, 38080, 41888, 42680, 43456, 46172, 49280, 52360, 52768, 54320, 57715, 59752, 59840, 62080, 65960, 68288, 72556, 74690, 76160, 83776, 85360, 86912, 90695, 92344, 104720, 105536, 108640, 115430, 119504, 119680, 126973, 131920, 136576, 145112, 149380, 167552, 170720, 181390, 184688, 209440, 211072, 217280, 230860, 239008, 253946, 263840, 290224, 298760, 341440, 362780, 369376, 418880, 434560, 461720, 478016, 507892, 527680, 580448, 597520, 634865, 682880, 725560, 738752, 837760, 923440, 956032, 1015784, 1055360, 1160896, 1195040, 1269730, 1451120, 1477504, 1846880, 2031568, 2321792, 2390080, 2539460, 2902240, 3693760, 4063136, 4780160, 5078920, 5804480, 7387520, 8126272, 10157840, 11608960, 16252544, 20315680, 40631360, 81262720]

約数ペア:

[(1, 81262720), (2, 40631360), (4, 20315680), (5, 16252544), (7, 11608960), (8, 10157840), (10, 8126272), (11, 7387520), (14, 5804480), (16, 5078920), (17, 4780160), (20, 4063136), (22, 3693760), (28, 2902240), (32, 2539460), (34, 2390080), (35, 2321792), (40, 2031568), (44, 1846880), (55, 1477504), (56, 1451120), (64, 1269730), (68, 1195040), (70, 1160896), (77, 1055360), (80, 1015784), (85, 956032), (88, 923440), (97, 837760), (110, 738752), (112, 725560), (119, 682880), (128, 634865), (136, 597520), (140, 580448), (154, 527680), (160, 507892), (170, 478016), (176, 461720), (187, 434560), (194, 418880), (220, 369376), (224, 362780), (238, 341440), (272, 298760), (280, 290224), (308, 263840), (320, 253946), (340, 239008), (352, 230860), (374, 217280), (385, 211072), (388, 209440), (440, 184688), (448, 181390), (476, 170720), (485, 167552), (544, 149380), (560, 145112), (595, 136576), (616, 131920), (640, 126973), (679, 119680), (680, 119504), (704, 115430), (748, 108640), (770, 105536), (776, 104720), (880, 92344), (896, 90695), (935, 86912), (952, 85360), (970, 83776), (1067, 76160), (1088, 74690), (1120, 72556), (1190, 68288), (1232, 65960), (1309, 62080), (1358, 59840), (1360, 59752), (1408, 57715), (1496, 54320), (1540, 52768), (1552, 52360), (1649, 49280), (1760, 46172), (1870, 43456), (1904, 42680), (1940, 41888), (2134, 38080), (2176, 37345), (2240, 36278), (2380, 34144), (2464, 32980), (2618, 31040), (2716, 29920), (2720, 29876), (2992, 27160), (3080, 26384), (3104, 26180), (3298, 24640), (3395, 23936), (3520, 23086), (3740, 21728), (3808, 21340), (3880, 20944), (4268, 19040), (4480, 18139), (4760, 17072), (4928, 16490), (5236, 15520), (5335, 15232), (5432, 14960), (5440, 14938), (5984, 13580), (6160, 13192), (6208, 13090), (6545, 12416), (6596, 12320), (6790, 11968), (7040, 11543), (7469, 10880), (7480, 10864), (7616, 10670), (7760, 10472), (8245, 9856), (8536, 9520)]