80421440

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:137

約数の個数: 168

約数和(自身を含む): 220528896

約数和(自身を除く): 140107456

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 67, 80, 88, 110, 121, 124, 134, 155, 160, 176, 220, 242, 248, 268, 310, 320, 335, 341, 352, 440, 484, 496, 536, 605, 620, 670, 682, 704, 737, 880, 968, 992, 1072, 1210, 1240, 1340, 1364, 1474, 1705, 1760, 1936, 1984, 2077, 2144, 2420, 2480, 2680, 2728, 2948, 3410, 3520, 3685, 3751, 3872, 4154, 4288, 4840, 4960, 5360, 5456, 5896, 6820, 7370, 7502, 7744, 8107, 8308, 9680, 9920, 10385, 10720, 10912, 11792, 13640, 14740, 15004, 16214, 16616, 18755, 19360, 20770, 21440, 21824, 22847, 23584, 27280, 29480, 30008, 32428, 33232, 37510, 38720, 40535, 41540, 45694, 47168, 54560, 58960, 60016, 64856, 66464, 75020, 81070, 83080, 91388, 109120, 114235, 117920, 120032, 129712, 132928, 150040, 162140, 166160, 182776, 228470, 235840, 240064, 251317, 259424, 300080, 324280, 332320, 365552, 456940, 502634, 518848, 600160, 648560, 664640, 731104, 913880, 1005268, 1200320, 1256585, 1297120, 1462208, 1827760, 2010536, 2513170, 2594240, 3655520, 4021072, 5026340, 7311040, 8042144, 10052680, 16084288, 20105360, 40210720, 80421440]

約数ペア:

[(1, 80421440), (2, 40210720), (4, 20105360), (5, 16084288), (8, 10052680), (10, 8042144), (11, 7311040), (16, 5026340), (20, 4021072), (22, 3655520), (31, 2594240), (32, 2513170), (40, 2010536), (44, 1827760), (55, 1462208), (62, 1297120), (64, 1256585), (67, 1200320), (80, 1005268), (88, 913880), (110, 731104), (121, 664640), (124, 648560), (134, 600160), (155, 518848), (160, 502634), (176, 456940), (220, 365552), (242, 332320), (248, 324280), (268, 300080), (310, 259424), (320, 251317), (335, 240064), (341, 235840), (352, 228470), (440, 182776), (484, 166160), (496, 162140), (536, 150040), (605, 132928), (620, 129712), (670, 120032), (682, 117920), (704, 114235), (737, 109120), (880, 91388), (968, 83080), (992, 81070), (1072, 75020), (1210, 66464), (1240, 64856), (1340, 60016), (1364, 58960), (1474, 54560), (1705, 47168), (1760, 45694), (1936, 41540), (1984, 40535), (2077, 38720), (2144, 37510), (2420, 33232), (2480, 32428), (2680, 30008), (2728, 29480), (2948, 27280), (3410, 23584), (3520, 22847), (3685, 21824), (3751, 21440), (3872, 20770), (4154, 19360), (4288, 18755), (4840, 16616), (4960, 16214), (5360, 15004), (5456, 14740), (5896, 13640), (6820, 11792), (7370, 10912), (7502, 10720), (7744, 10385), (8107, 9920), (8308, 9680)]