81906440

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:196

約数の個数: 192

約数和(自身を含む): 243777600

約数和(自身を除く): 161871160

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 29, 35, 40, 44, 49, 55, 56, 58, 70, 77, 88, 98, 110, 116, 131, 140, 145, 154, 196, 203, 220, 232, 245, 262, 280, 290, 308, 319, 385, 392, 406, 440, 490, 524, 539, 580, 616, 638, 655, 770, 812, 917, 980, 1015, 1048, 1078, 1160, 1276, 1310, 1421, 1441, 1540, 1595, 1624, 1834, 1960, 2030, 2156, 2233, 2552, 2620, 2695, 2842, 2882, 3080, 3190, 3668, 3799, 4060, 4312, 4466, 4585, 5240, 5390, 5684, 5764, 6380, 6419, 7105, 7205, 7336, 7598, 8120, 8932, 9170, 10087, 10780, 11165, 11368, 11528, 12760, 12838, 14210, 14410, 15196, 15631, 17864, 18340, 18995, 20174, 21560, 22330, 25676, 26593, 28420, 28820, 30392, 31262, 32095, 36680, 37990, 40348, 41789, 44660, 50435, 51352, 53186, 56840, 57640, 62524, 64190, 70609, 75980, 78155, 80696, 83578, 89320, 100870, 106372, 125048, 128380, 132965, 141218, 151960, 156310, 167156, 186151, 201740, 208945, 212744, 256760, 265930, 282436, 292523, 312620, 334312, 353045, 372302, 403480, 417890, 531860, 564872, 585046, 625240, 706090, 744604, 835780, 930755, 1063720, 1170092, 1412180, 1462615, 1489208, 1671560, 1861510, 2047661, 2340184, 2824360, 2925230, 3723020, 4095322, 5850460, 7446040, 8190644, 10238305, 11700920, 16381288, 20476610, 40953220, 81906440]

約数ペア:

[(1, 81906440), (2, 40953220), (4, 20476610), (5, 16381288), (7, 11700920), (8, 10238305), (10, 8190644), (11, 7446040), (14, 5850460), (20, 4095322), (22, 3723020), (28, 2925230), (29, 2824360), (35, 2340184), (40, 2047661), (44, 1861510), (49, 1671560), (55, 1489208), (56, 1462615), (58, 1412180), (70, 1170092), (77, 1063720), (88, 930755), (98, 835780), (110, 744604), (116, 706090), (131, 625240), (140, 585046), (145, 564872), (154, 531860), (196, 417890), (203, 403480), (220, 372302), (232, 353045), (245, 334312), (262, 312620), (280, 292523), (290, 282436), (308, 265930), (319, 256760), (385, 212744), (392, 208945), (406, 201740), (440, 186151), (490, 167156), (524, 156310), (539, 151960), (580, 141218), (616, 132965), (638, 128380), (655, 125048), (770, 106372), (812, 100870), (917, 89320), (980, 83578), (1015, 80696), (1048, 78155), (1078, 75980), (1160, 70609), (1276, 64190), (1310, 62524), (1421, 57640), (1441, 56840), (1540, 53186), (1595, 51352), (1624, 50435), (1834, 44660), (1960, 41789), (2030, 40348), (2156, 37990), (2233, 36680), (2552, 32095), (2620, 31262), (2695, 30392), (2842, 28820), (2882, 28420), (3080, 26593), (3190, 25676), (3668, 22330), (3799, 21560), (4060, 20174), (4312, 18995), (4466, 18340), (4585, 17864), (5240, 15631), (5390, 15196), (5684, 14410), (5764, 14210), (6380, 12838), (6419, 12760), (7105, 11528), (7205, 11368), (7336, 11165), (7598, 10780), (8120, 10087), (8932, 9170)]