128979840

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:261

約数の個数: 256

約数和(自身を含む): 465315840

約数和(自身を除く): 336336000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 31, 32, 33, 40, 44, 48, 55, 60, 62, 64, 66, 80, 88, 93, 96, 110, 120, 124, 128, 132, 155, 160, 165, 176, 186, 192, 197, 220, 240, 248, 264, 310, 320, 330, 341, 352, 372, 384, 394, 440, 465, 480, 496, 528, 591, 620, 640, 660, 682, 704, 744, 788, 880, 930, 960, 985, 992, 1023, 1056, 1182, 1240, 1320, 1364, 1408, 1488, 1576, 1705, 1760, 1860, 1920, 1970, 1984, 2046, 2112, 2167, 2364, 2480, 2640, 2728, 2955, 2976, 3152, 3410, 3520, 3720, 3940, 3968, 4092, 4224, 4334, 4728, 4960, 5115, 5280, 5456, 5910, 5952, 6107, 6304, 6501, 6820, 7040, 7440, 7880, 8184, 8668, 9456, 9920, 10230, 10560, 10835, 10912, 11820, 11904, 12214, 12608, 13002, 13640, 14880, 15760, 16368, 17336, 18321, 18912, 19840, 20460, 21120, 21670, 21824, 23640, 24428, 25216, 26004, 27280, 29760, 30535, 31520, 32505, 32736, 34672, 36642, 37824, 40920, 43340, 43648, 47280, 48856, 52008, 54560, 59520, 61070, 63040, 65010, 65472, 67177, 69344, 73284, 75648, 81840, 86680, 91605, 94560, 97712, 104016, 109120, 122140, 126080, 130020, 130944, 134354, 138688, 146568, 163680, 173360, 183210, 189120, 195424, 201531, 208032, 218240, 244280, 260040, 268708, 277376, 293136, 327360, 335885, 346720, 366420, 378240, 390848, 403062, 416064, 488560, 520080, 537416, 586272, 654720, 671770, 693440, 732840, 781696, 806124, 832128, 977120, 1007655, 1040160, 1074832, 1172544, 1343540, 1386880, 1465680, 1612248, 1954240, 2015310, 2080320, 2149664, 2345088, 2687080, 2931360, 3224496, 3908480, 4030620, 4160640, 4299328, 5374160, 5862720, 6448992, 8061240, 8598656, 10748320, 11725440, 12897984, 16122480, 21496640, 25795968, 32244960, 42993280, 64489920, 128979840]

約数ペア:

[(1, 128979840), (2, 64489920), (3, 42993280), (4, 32244960), (5, 25795968), (6, 21496640), (8, 16122480), (10, 12897984), (11, 11725440), (12, 10748320), (15, 8598656), (16, 8061240), (20, 6448992), (22, 5862720), (24, 5374160), (30, 4299328), (31, 4160640), (32, 4030620), (33, 3908480), (40, 3224496), (44, 2931360), (48, 2687080), (55, 2345088), (60, 2149664), (62, 2080320), (64, 2015310), (66, 1954240), (80, 1612248), (88, 1465680), (93, 1386880), (96, 1343540), (110, 1172544), (120, 1074832), (124, 1040160), (128, 1007655), (132, 977120), (155, 832128), (160, 806124), (165, 781696), (176, 732840), (186, 693440), (192, 671770), (197, 654720), (220, 586272), (240, 537416), (248, 520080), (264, 488560), (310, 416064), (320, 403062), (330, 390848), (341, 378240), (352, 366420), (372, 346720), (384, 335885), (394, 327360), (440, 293136), (465, 277376), (480, 268708), (496, 260040), (528, 244280), (591, 218240), (620, 208032), (640, 201531), (660, 195424), (682, 189120), (704, 183210), (744, 173360), (788, 163680), (880, 146568), (930, 138688), (960, 134354), (985, 130944), (992, 130020), (1023, 126080), (1056, 122140), (1182, 109120), (1240, 104016), (1320, 97712), (1364, 94560), (1408, 91605), (1488, 86680), (1576, 81840), (1705, 75648), (1760, 73284), (1860, 69344), (1920, 67177), (1970, 65472), (1984, 65010), (2046, 63040), (2112, 61070), (2167, 59520), (2364, 54560), (2480, 52008), (2640, 48856), (2728, 47280), (2955, 43648), (2976, 43340), (3152, 40920), (3410, 37824), (3520, 36642), (3720, 34672), (3940, 32736), (3968, 32505), (4092, 31520), (4224, 30535), (4334, 29760), (4728, 27280), (4960, 26004), (5115, 25216), (5280, 24428), (5456, 23640), (5910, 21824), (5952, 21670), (6107, 21120), (6304, 20460), (6501, 19840), (6820, 18912), (7040, 18321), (7440, 17336), (7880, 16368), (8184, 15760), (8668, 14880), (9456, 13640), (9920, 13002), (10230, 12608), (10560, 12214), (10835, 11904), (10912, 11820)]