217548320

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{661}}^1$

素因数の和:715

約数の個数: 144

約数和(自身を含む): 599064984

約数和(自身を除く): 381516664

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 32, 34, 40, 44, 55, 68, 80, 85, 88, 110, 121, 136, 160, 170, 176, 187, 220, 242, 272, 340, 352, 374, 440, 484, 544, 605, 661, 680, 748, 880, 935, 968, 1210, 1322, 1360, 1496, 1760, 1870, 1936, 2057, 2420, 2644, 2720, 2992, 3305, 3740, 3872, 4114, 4840, 5288, 5984, 6610, 7271, 7480, 8228, 9680, 10285, 10576, 11237, 13220, 14542, 14960, 16456, 19360, 20570, 21152, 22474, 26440, 29084, 29920, 32912, 36355, 41140, 44948, 52880, 56185, 58168, 65824, 72710, 79981, 82280, 89896, 105760, 112370, 116336, 123607, 145420, 159962, 164560, 179792, 224740, 232672, 247214, 290840, 319924, 329120, 359584, 399905, 449480, 494428, 581680, 618035, 639848, 799810, 898960, 988856, 1163360, 1236070, 1279696, 1359677, 1599620, 1797920, 1977712, 2472140, 2559392, 2719354, 3199240, 3955424, 4944280, 5438708, 6398480, 6798385, 9888560, 10877416, 12796960, 13596770, 19777120, 21754832, 27193540, 43509664, 54387080, 108774160, 217548320]

約数ペア:

[(1, 217548320), (2, 108774160), (4, 54387080), (5, 43509664), (8, 27193540), (10, 21754832), (11, 19777120), (16, 13596770), (17, 12796960), (20, 10877416), (22, 9888560), (32, 6798385), (34, 6398480), (40, 5438708), (44, 4944280), (55, 3955424), (68, 3199240), (80, 2719354), (85, 2559392), (88, 2472140), (110, 1977712), (121, 1797920), (136, 1599620), (160, 1359677), (170, 1279696), (176, 1236070), (187, 1163360), (220, 988856), (242, 898960), (272, 799810), (340, 639848), (352, 618035), (374, 581680), (440, 494428), (484, 449480), (544, 399905), (605, 359584), (661, 329120), (680, 319924), (748, 290840), (880, 247214), (935, 232672), (968, 224740), (1210, 179792), (1322, 164560), (1360, 159962), (1496, 145420), (1760, 123607), (1870, 116336), (1936, 112370), (2057, 105760), (2420, 89896), (2644, 82280), (2720, 79981), (2992, 72710), (3305, 65824), (3740, 58168), (3872, 56185), (4114, 52880), (4840, 44948), (5288, 41140), (5984, 36355), (6610, 32912), (7271, 29920), (7480, 29084), (8228, 26440), (9680, 22474), (10285, 21152), (10576, 20570), (11237, 19360), (13220, 16456), (14542, 14960)]