81509760

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:170

約数の個数: 256

約数和(自身を含む): 297432000

約数和(自身を除く): 215922240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 53, 54, 60, 64, 72, 80, 89, 90, 96, 106, 108, 120, 128, 135, 144, 159, 160, 178, 180, 192, 212, 216, 240, 265, 267, 270, 288, 318, 320, 356, 360, 384, 424, 432, 445, 477, 480, 530, 534, 540, 576, 636, 640, 712, 720, 795, 801, 848, 864, 890, 954, 960, 1060, 1068, 1080, 1152, 1272, 1335, 1424, 1431, 1440, 1590, 1602, 1696, 1728, 1780, 1908, 1920, 2120, 2136, 2160, 2385, 2403, 2544, 2670, 2848, 2862, 2880, 3180, 3204, 3392, 3456, 3560, 3816, 4005, 4240, 4272, 4320, 4717, 4770, 4806, 5088, 5340, 5696, 5724, 5760, 6360, 6408, 6784, 7120, 7155, 7632, 8010, 8480, 8544, 8640, 9434, 9540, 9612, 10176, 10680, 11392, 11448, 12015, 12720, 12816, 14151, 14240, 14310, 15264, 16020, 16960, 17088, 17280, 18868, 19080, 19224, 20352, 21360, 22896, 23585, 24030, 25440, 25632, 28302, 28480, 28620, 30528, 32040, 33920, 34176, 37736, 38160, 38448, 42453, 42720, 45792, 47170, 48060, 50880, 51264, 56604, 56960, 57240, 61056, 64080, 70755, 75472, 76320, 76896, 84906, 85440, 91584, 94340, 96120, 101760, 102528, 113208, 114480, 127359, 128160, 141510, 150944, 152640, 153792, 169812, 170880, 183168, 188680, 192240, 212265, 226416, 228960, 254718, 256320, 283020, 301888, 305280, 307584, 339624, 377360, 384480, 424530, 452832, 457920, 509436, 512640, 566040, 603776, 636795, 679248, 754720, 768960, 849060, 905664, 915840, 1018872, 1132080, 1273590, 1358496, 1509440, 1537920, 1698120, 1811328, 2037744, 2264160, 2547180, 2716992, 3018880, 3396240, 4075488, 4528320, 5094360, 5433984, 6792480, 8150976, 9056640, 10188720, 13584960, 16301952, 20377440, 27169920, 40754880, 81509760]

約数ペア:

[(1, 81509760), (2, 40754880), (3, 27169920), (4, 20377440), (5, 16301952), (6, 13584960), (8, 10188720), (9, 9056640), (10, 8150976), (12, 6792480), (15, 5433984), (16, 5094360), (18, 4528320), (20, 4075488), (24, 3396240), (27, 3018880), (30, 2716992), (32, 2547180), (36, 2264160), (40, 2037744), (45, 1811328), (48, 1698120), (53, 1537920), (54, 1509440), (60, 1358496), (64, 1273590), (72, 1132080), (80, 1018872), (89, 915840), (90, 905664), (96, 849060), (106, 768960), (108, 754720), (120, 679248), (128, 636795), (135, 603776), (144, 566040), (159, 512640), (160, 509436), (178, 457920), (180, 452832), (192, 424530), (212, 384480), (216, 377360), (240, 339624), (265, 307584), (267, 305280), (270, 301888), (288, 283020), (318, 256320), (320, 254718), (356, 228960), (360, 226416), (384, 212265), (424, 192240), (432, 188680), (445, 183168), (477, 170880), (480, 169812), (530, 153792), (534, 152640), (540, 150944), (576, 141510), (636, 128160), (640, 127359), (712, 114480), (720, 113208), (795, 102528), (801, 101760), (848, 96120), (864, 94340), (890, 91584), (954, 85440), (960, 84906), (1060, 76896), (1068, 76320), (1080, 75472), (1152, 70755), (1272, 64080), (1335, 61056), (1424, 57240), (1431, 56960), (1440, 56604), (1590, 51264), (1602, 50880), (1696, 48060), (1728, 47170), (1780, 45792), (1908, 42720), (1920, 42453), (2120, 38448), (2136, 38160), (2160, 37736), (2385, 34176), (2403, 33920), (2544, 32040), (2670, 30528), (2848, 28620), (2862, 28480), (2880, 28302), (3180, 25632), (3204, 25440), (3392, 24030), (3456, 23585), (3560, 22896), (3816, 21360), (4005, 20352), (4240, 19224), (4272, 19080), (4320, 18868), (4717, 17280), (4770, 17088), (4806, 16960), (5088, 16020), (5340, 15264), (5696, 14310), (5724, 14240), (5760, 14151), (6360, 12816), (6408, 12720), (6784, 12015), (7120, 11448), (7155, 11392), (7632, 10680), (8010, 10176), (8480, 9612), (8544, 9540), (8640, 9434)]