81508560

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:298

約数の個数: 240

約数和(自身を含む): 305337600

約数和(自身を除く): 223829040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 29, 30, 35, 40, 42, 48, 49, 56, 58, 60, 70, 80, 84, 87, 98, 105, 112, 116, 120, 140, 145, 147, 168, 174, 196, 203, 210, 232, 239, 240, 245, 280, 290, 294, 336, 348, 392, 406, 420, 435, 464, 478, 490, 560, 580, 588, 609, 696, 717, 735, 784, 812, 840, 870, 956, 980, 1015, 1160, 1176, 1195, 1218, 1392, 1421, 1434, 1470, 1624, 1673, 1680, 1740, 1912, 1960, 2030, 2320, 2352, 2390, 2436, 2842, 2868, 2940, 3045, 3248, 3346, 3480, 3585, 3824, 3920, 4060, 4263, 4780, 4872, 5019, 5684, 5736, 5880, 6090, 6692, 6931, 6960, 7105, 7170, 8120, 8365, 8526, 9560, 9744, 10038, 11368, 11472, 11711, 11760, 12180, 13384, 13862, 14210, 14340, 16240, 16730, 17052, 19120, 20076, 20793, 21315, 22736, 23422, 24360, 25095, 26768, 27724, 28420, 28680, 33460, 34104, 34655, 35133, 40152, 41586, 42630, 46844, 48517, 48720, 50190, 55448, 56840, 57360, 58555, 66920, 68208, 69310, 70266, 80304, 83172, 85260, 93688, 97034, 100380, 103965, 110896, 113680, 117110, 133840, 138620, 140532, 145551, 166344, 170520, 175665, 187376, 194068, 200760, 207930, 234220, 242585, 277240, 281064, 291102, 332688, 339619, 341040, 351330, 388136, 401520, 415860, 468440, 485170, 554480, 562128, 582204, 679238, 702660, 727755, 776272, 831720, 936880, 970340, 1018857, 1164408, 1358476, 1405320, 1455510, 1663440, 1698095, 1940680, 2037714, 2328816, 2716952, 2810640, 2911020, 3396190, 3881360, 4075428, 5094285, 5433904, 5822040, 6792380, 8150856, 10188570, 11644080, 13584760, 16301712, 20377140, 27169520, 40754280, 81508560]

約数ペア:

[(1, 81508560), (2, 40754280), (3, 27169520), (4, 20377140), (5, 16301712), (6, 13584760), (7, 11644080), (8, 10188570), (10, 8150856), (12, 6792380), (14, 5822040), (15, 5433904), (16, 5094285), (20, 4075428), (21, 3881360), (24, 3396190), (28, 2911020), (29, 2810640), (30, 2716952), (35, 2328816), (40, 2037714), (42, 1940680), (48, 1698095), (49, 1663440), (56, 1455510), (58, 1405320), (60, 1358476), (70, 1164408), (80, 1018857), (84, 970340), (87, 936880), (98, 831720), (105, 776272), (112, 727755), (116, 702660), (120, 679238), (140, 582204), (145, 562128), (147, 554480), (168, 485170), (174, 468440), (196, 415860), (203, 401520), (210, 388136), (232, 351330), (239, 341040), (240, 339619), (245, 332688), (280, 291102), (290, 281064), (294, 277240), (336, 242585), (348, 234220), (392, 207930), (406, 200760), (420, 194068), (435, 187376), (464, 175665), (478, 170520), (490, 166344), (560, 145551), (580, 140532), (588, 138620), (609, 133840), (696, 117110), (717, 113680), (735, 110896), (784, 103965), (812, 100380), (840, 97034), (870, 93688), (956, 85260), (980, 83172), (1015, 80304), (1160, 70266), (1176, 69310), (1195, 68208), (1218, 66920), (1392, 58555), (1421, 57360), (1434, 56840), (1470, 55448), (1624, 50190), (1673, 48720), (1680, 48517), (1740, 46844), (1912, 42630), (1960, 41586), (2030, 40152), (2320, 35133), (2352, 34655), (2390, 34104), (2436, 33460), (2842, 28680), (2868, 28420), (2940, 27724), (3045, 26768), (3248, 25095), (3346, 24360), (3480, 23422), (3585, 22736), (3824, 21315), (3920, 20793), (4060, 20076), (4263, 19120), (4780, 17052), (4872, 16730), (5019, 16240), (5684, 14340), (5736, 14210), (5880, 13862), (6090, 13384), (6692, 12180), (6931, 11760), (6960, 11711), (7105, 11472), (7170, 11368), (8120, 10038), (8365, 9744), (8526, 9560)]