81730880

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:173

約数の個数: 224

約数和(自身を含む): 252813312

約数和(自身を除く): 171082432

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 31, 32, 35, 40, 44, 55, 56, 62, 64, 70, 77, 80, 88, 107, 110, 112, 124, 140, 154, 155, 160, 176, 214, 217, 220, 224, 248, 280, 308, 310, 320, 341, 352, 385, 428, 434, 440, 448, 496, 535, 560, 616, 620, 682, 704, 749, 770, 856, 868, 880, 992, 1070, 1085, 1120, 1177, 1232, 1240, 1364, 1498, 1540, 1705, 1712, 1736, 1760, 1984, 2140, 2170, 2240, 2354, 2387, 2464, 2480, 2728, 2996, 3080, 3317, 3410, 3424, 3472, 3520, 3745, 4280, 4340, 4708, 4774, 4928, 4960, 5456, 5885, 5992, 6160, 6634, 6820, 6848, 6944, 7490, 8239, 8560, 8680, 9416, 9548, 9920, 10912, 11770, 11935, 11984, 12320, 13268, 13640, 13888, 14980, 16478, 16585, 17120, 17360, 18832, 19096, 21824, 23219, 23540, 23870, 23968, 24640, 26536, 27280, 29960, 32956, 33170, 34240, 34720, 36487, 37664, 38192, 41195, 46438, 47080, 47740, 47936, 53072, 54560, 59920, 65912, 66340, 69440, 72974, 75328, 76384, 82390, 92876, 94160, 95480, 106144, 109120, 116095, 119840, 131824, 132680, 145948, 152768, 164780, 182435, 185752, 188320, 190960, 212288, 232190, 239680, 255409, 263648, 265360, 291896, 329560, 364870, 371504, 376640, 381920, 464380, 510818, 527296, 530720, 583792, 659120, 729740, 743008, 763840, 928760, 1021636, 1061440, 1167584, 1277045, 1318240, 1459480, 1486016, 1857520, 2043272, 2335168, 2554090, 2636480, 2918960, 3715040, 4086544, 5108180, 5837920, 7430080, 8173088, 10216360, 11675840, 16346176, 20432720, 40865440, 81730880]

約数ペア:

[(1, 81730880), (2, 40865440), (4, 20432720), (5, 16346176), (7, 11675840), (8, 10216360), (10, 8173088), (11, 7430080), (14, 5837920), (16, 5108180), (20, 4086544), (22, 3715040), (28, 2918960), (31, 2636480), (32, 2554090), (35, 2335168), (40, 2043272), (44, 1857520), (55, 1486016), (56, 1459480), (62, 1318240), (64, 1277045), (70, 1167584), (77, 1061440), (80, 1021636), (88, 928760), (107, 763840), (110, 743008), (112, 729740), (124, 659120), (140, 583792), (154, 530720), (155, 527296), (160, 510818), (176, 464380), (214, 381920), (217, 376640), (220, 371504), (224, 364870), (248, 329560), (280, 291896), (308, 265360), (310, 263648), (320, 255409), (341, 239680), (352, 232190), (385, 212288), (428, 190960), (434, 188320), (440, 185752), (448, 182435), (496, 164780), (535, 152768), (560, 145948), (616, 132680), (620, 131824), (682, 119840), (704, 116095), (749, 109120), (770, 106144), (856, 95480), (868, 94160), (880, 92876), (992, 82390), (1070, 76384), (1085, 75328), (1120, 72974), (1177, 69440), (1232, 66340), (1240, 65912), (1364, 59920), (1498, 54560), (1540, 53072), (1705, 47936), (1712, 47740), (1736, 47080), (1760, 46438), (1984, 41195), (2140, 38192), (2170, 37664), (2240, 36487), (2354, 34720), (2387, 34240), (2464, 33170), (2480, 32956), (2728, 29960), (2996, 27280), (3080, 26536), (3317, 24640), (3410, 23968), (3424, 23870), (3472, 23540), (3520, 23219), (3745, 21824), (4280, 19096), (4340, 18832), (4708, 17360), (4774, 17120), (4928, 16585), (4960, 16478), (5456, 14980), (5885, 13888), (5992, 13640), (6160, 13268), (6634, 12320), (6820, 11984), (6848, 11935), (6944, 11770), (7490, 10912), (8239, 9920), (8560, 9548), (8680, 9416)]