81369400

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1$

素因数の和:91

約数の個数: 216

約数和(自身を含む): 242361720

約数和(自身を除く): 160992320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 23, 25, 28, 35, 38, 40, 46, 49, 50, 56, 70, 76, 92, 95, 98, 100, 115, 133, 140, 152, 161, 175, 184, 190, 196, 200, 230, 245, 266, 280, 322, 350, 361, 380, 392, 437, 460, 475, 490, 532, 575, 644, 665, 700, 722, 760, 805, 874, 920, 931, 950, 980, 1064, 1127, 1150, 1225, 1288, 1330, 1400, 1444, 1610, 1748, 1805, 1862, 1900, 1960, 2185, 2254, 2300, 2450, 2527, 2660, 2888, 3059, 3220, 3325, 3496, 3610, 3724, 3800, 4025, 4370, 4508, 4600, 4655, 4900, 5054, 5320, 5635, 6118, 6440, 6650, 7220, 7448, 8050, 8303, 8740, 9016, 9025, 9310, 9800, 10108, 10925, 11270, 12236, 12635, 13300, 14440, 15295, 16100, 16606, 17480, 17689, 18050, 18620, 20216, 21413, 21850, 22540, 23275, 24472, 25270, 26600, 28175, 30590, 32200, 33212, 35378, 36100, 37240, 41515, 42826, 43700, 45080, 46550, 50540, 56350, 58121, 61180, 63175, 66424, 70756, 72200, 76475, 83030, 85652, 87400, 88445, 93100, 101080, 107065, 112700, 116242, 122360, 126350, 141512, 152950, 166060, 171304, 176890, 186200, 207575, 214130, 225400, 232484, 252700, 290605, 305900, 332120, 353780, 406847, 415150, 428260, 442225, 464968, 505400, 535325, 581210, 611800, 707560, 813694, 830300, 856520, 884450, 1070650, 1162420, 1453025, 1627388, 1660600, 1768900, 2034235, 2141300, 2324840, 2906050, 3254776, 3537800, 4068470, 4282600, 5812100, 8136940, 10171175, 11624200, 16273880, 20342350, 40684700, 81369400]

約数ペア:

[(1, 81369400), (2, 40684700), (4, 20342350), (5, 16273880), (7, 11624200), (8, 10171175), (10, 8136940), (14, 5812100), (19, 4282600), (20, 4068470), (23, 3537800), (25, 3254776), (28, 2906050), (35, 2324840), (38, 2141300), (40, 2034235), (46, 1768900), (49, 1660600), (50, 1627388), (56, 1453025), (70, 1162420), (76, 1070650), (92, 884450), (95, 856520), (98, 830300), (100, 813694), (115, 707560), (133, 611800), (140, 581210), (152, 535325), (161, 505400), (175, 464968), (184, 442225), (190, 428260), (196, 415150), (200, 406847), (230, 353780), (245, 332120), (266, 305900), (280, 290605), (322, 252700), (350, 232484), (361, 225400), (380, 214130), (392, 207575), (437, 186200), (460, 176890), (475, 171304), (490, 166060), (532, 152950), (575, 141512), (644, 126350), (665, 122360), (700, 116242), (722, 112700), (760, 107065), (805, 101080), (874, 93100), (920, 88445), (931, 87400), (950, 85652), (980, 83030), (1064, 76475), (1127, 72200), (1150, 70756), (1225, 66424), (1288, 63175), (1330, 61180), (1400, 58121), (1444, 56350), (1610, 50540), (1748, 46550), (1805, 45080), (1862, 43700), (1900, 42826), (1960, 41515), (2185, 37240), (2254, 36100), (2300, 35378), (2450, 33212), (2527, 32200), (2660, 30590), (2888, 28175), (3059, 26600), (3220, 25270), (3325, 24472), (3496, 23275), (3610, 22540), (3724, 21850), (3800, 21413), (4025, 20216), (4370, 18620), (4508, 18050), (4600, 17689), (4655, 17480), (4900, 16606), (5054, 16100), (5320, 15295), (5635, 14440), (6118, 13300), (6440, 12635), (6650, 12236), (7220, 11270), (7448, 10925), (8050, 10108), (8303, 9800), (8740, 9310), (9016, 9025)]