81561920

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:121

約数の個数: 224

約数和(自身を含む): 237012480

約数和(自身を除く): 155450560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 29, 32, 34, 40, 44, 47, 55, 58, 64, 68, 80, 85, 88, 94, 110, 116, 136, 145, 160, 170, 176, 187, 188, 220, 232, 235, 272, 290, 319, 320, 340, 352, 374, 376, 440, 464, 470, 493, 517, 544, 580, 638, 680, 704, 748, 752, 799, 880, 928, 935, 940, 986, 1034, 1088, 1160, 1276, 1360, 1363, 1496, 1504, 1595, 1598, 1760, 1856, 1870, 1880, 1972, 2068, 2320, 2465, 2552, 2585, 2720, 2726, 2992, 3008, 3190, 3196, 3520, 3740, 3760, 3944, 3995, 4136, 4640, 4930, 5104, 5170, 5423, 5440, 5452, 5984, 6380, 6392, 6815, 7480, 7520, 7888, 7990, 8272, 8789, 9280, 9860, 10208, 10340, 10846, 10904, 11968, 12760, 12784, 13630, 14960, 14993, 15040, 15776, 15980, 16544, 17578, 19720, 20416, 20680, 21692, 21808, 23171, 25520, 25568, 27115, 27260, 29920, 29986, 31552, 31960, 33088, 35156, 39440, 41360, 43384, 43616, 43945, 46342, 51040, 51136, 54230, 54520, 59840, 59972, 63920, 70312, 74965, 78880, 82720, 86768, 87232, 87890, 92684, 102080, 108460, 109040, 115855, 119944, 127840, 140624, 149930, 157760, 165440, 173536, 175780, 185368, 216920, 218080, 231710, 239888, 254881, 255680, 281248, 299860, 347072, 351560, 370736, 433840, 436160, 463420, 479776, 509762, 562496, 599720, 703120, 741472, 867680, 926840, 959552, 1019524, 1199440, 1274405, 1406240, 1482944, 1735360, 1853680, 2039048, 2398880, 2548810, 2812480, 3707360, 4078096, 4797760, 5097620, 7414720, 8156192, 10195240, 16312384, 20390480, 40780960, 81561920]

約数ペア:

[(1, 81561920), (2, 40780960), (4, 20390480), (5, 16312384), (8, 10195240), (10, 8156192), (11, 7414720), (16, 5097620), (17, 4797760), (20, 4078096), (22, 3707360), (29, 2812480), (32, 2548810), (34, 2398880), (40, 2039048), (44, 1853680), (47, 1735360), (55, 1482944), (58, 1406240), (64, 1274405), (68, 1199440), (80, 1019524), (85, 959552), (88, 926840), (94, 867680), (110, 741472), (116, 703120), (136, 599720), (145, 562496), (160, 509762), (170, 479776), (176, 463420), (187, 436160), (188, 433840), (220, 370736), (232, 351560), (235, 347072), (272, 299860), (290, 281248), (319, 255680), (320, 254881), (340, 239888), (352, 231710), (374, 218080), (376, 216920), (440, 185368), (464, 175780), (470, 173536), (493, 165440), (517, 157760), (544, 149930), (580, 140624), (638, 127840), (680, 119944), (704, 115855), (748, 109040), (752, 108460), (799, 102080), (880, 92684), (928, 87890), (935, 87232), (940, 86768), (986, 82720), (1034, 78880), (1088, 74965), (1160, 70312), (1276, 63920), (1360, 59972), (1363, 59840), (1496, 54520), (1504, 54230), (1595, 51136), (1598, 51040), (1760, 46342), (1856, 43945), (1870, 43616), (1880, 43384), (1972, 41360), (2068, 39440), (2320, 35156), (2465, 33088), (2552, 31960), (2585, 31552), (2720, 29986), (2726, 29920), (2992, 27260), (3008, 27115), (3190, 25568), (3196, 25520), (3520, 23171), (3740, 21808), (3760, 21692), (3944, 20680), (3995, 20416), (4136, 19720), (4640, 17578), (4930, 16544), (5104, 15980), (5170, 15776), (5423, 15040), (5440, 14993), (5452, 14960), (5984, 13630), (6380, 12784), (6392, 12760), (6815, 11968), (7480, 10904), (7520, 10846), (7888, 10340), (7990, 10208), (8272, 9860), (8789, 9280)]