81393840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:312

約数の個数: 240

約数和(自身を含む): 306408960

約数和(自身を除く): 225015120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 43, 44, 45, 48, 55, 60, 66, 72, 80, 86, 88, 90, 99, 110, 120, 129, 132, 144, 165, 172, 176, 180, 198, 215, 220, 239, 240, 258, 264, 330, 344, 360, 387, 396, 430, 440, 473, 478, 495, 516, 528, 645, 660, 688, 717, 720, 774, 792, 860, 880, 946, 956, 990, 1032, 1195, 1290, 1320, 1419, 1434, 1548, 1584, 1720, 1892, 1912, 1935, 1980, 2064, 2151, 2365, 2390, 2580, 2629, 2640, 2838, 2868, 3096, 3440, 3585, 3784, 3824, 3870, 3960, 4257, 4302, 4730, 4780, 5160, 5258, 5676, 5736, 6192, 7095, 7170, 7568, 7740, 7887, 7920, 8514, 8604, 9460, 9560, 10277, 10320, 10516, 10755, 11352, 11472, 13145, 14190, 14340, 15480, 15774, 17028, 17208, 18920, 19120, 20554, 21032, 21285, 21510, 22704, 23661, 26290, 28380, 28680, 30831, 30960, 31548, 34056, 34416, 37840, 39435, 41108, 42064, 42570, 43020, 47322, 51385, 52580, 56760, 57360, 61662, 63096, 68112, 78870, 82216, 85140, 86040, 92493, 94644, 102770, 105160, 113047, 113520, 118305, 123324, 126192, 154155, 157740, 164432, 170280, 172080, 184986, 189288, 205540, 210320, 226094, 236610, 246648, 308310, 315480, 339141, 340560, 369972, 378576, 411080, 452188, 462465, 473220, 493296, 565235, 616620, 630960, 678282, 739944, 822160, 904376, 924930, 946440, 1017423, 1130470, 1233240, 1356564, 1479888, 1695705, 1808752, 1849860, 1892880, 2034846, 2260940, 2466480, 2713128, 3391410, 3699720, 4069692, 4521880, 5087115, 5426256, 6782820, 7399440, 8139384, 9043760, 10174230, 13565640, 16278768, 20348460, 27131280, 40696920, 81393840]

約数ペア:

[(1, 81393840), (2, 40696920), (3, 27131280), (4, 20348460), (5, 16278768), (6, 13565640), (8, 10174230), (9, 9043760), (10, 8139384), (11, 7399440), (12, 6782820), (15, 5426256), (16, 5087115), (18, 4521880), (20, 4069692), (22, 3699720), (24, 3391410), (30, 2713128), (33, 2466480), (36, 2260940), (40, 2034846), (43, 1892880), (44, 1849860), (45, 1808752), (48, 1695705), (55, 1479888), (60, 1356564), (66, 1233240), (72, 1130470), (80, 1017423), (86, 946440), (88, 924930), (90, 904376), (99, 822160), (110, 739944), (120, 678282), (129, 630960), (132, 616620), (144, 565235), (165, 493296), (172, 473220), (176, 462465), (180, 452188), (198, 411080), (215, 378576), (220, 369972), (239, 340560), (240, 339141), (258, 315480), (264, 308310), (330, 246648), (344, 236610), (360, 226094), (387, 210320), (396, 205540), (430, 189288), (440, 184986), (473, 172080), (478, 170280), (495, 164432), (516, 157740), (528, 154155), (645, 126192), (660, 123324), (688, 118305), (717, 113520), (720, 113047), (774, 105160), (792, 102770), (860, 94644), (880, 92493), (946, 86040), (956, 85140), (990, 82216), (1032, 78870), (1195, 68112), (1290, 63096), (1320, 61662), (1419, 57360), (1434, 56760), (1548, 52580), (1584, 51385), (1720, 47322), (1892, 43020), (1912, 42570), (1935, 42064), (1980, 41108), (2064, 39435), (2151, 37840), (2365, 34416), (2390, 34056), (2580, 31548), (2629, 30960), (2640, 30831), (2838, 28680), (2868, 28380), (3096, 26290), (3440, 23661), (3585, 22704), (3784, 21510), (3824, 21285), (3870, 21032), (3960, 20554), (4257, 19120), (4302, 18920), (4730, 17208), (4780, 17028), (5160, 15774), (5258, 15480), (5676, 14340), (5736, 14190), (6192, 13145), (7095, 11472), (7170, 11352), (7568, 10755), (7740, 10516), (7887, 10320), (7920, 10277), (8514, 9560), (8604, 9460)]