81292640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:86

約数の個数: 288

約数和(自身を含む): 253380960

約数和(自身を除く): 172088320

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 17, 19, 20, 22, 26, 32, 34, 38, 40, 44, 52, 55, 65, 68, 76, 80, 85, 88, 95, 104, 110, 121, 130, 136, 143, 152, 160, 170, 176, 187, 190, 208, 209, 220, 221, 242, 247, 260, 272, 286, 304, 323, 340, 352, 374, 380, 416, 418, 440, 442, 484, 494, 520, 544, 572, 605, 608, 646, 680, 715, 748, 760, 836, 880, 884, 935, 968, 988, 1040, 1045, 1105, 1144, 1210, 1235, 1292, 1360, 1430, 1496, 1520, 1573, 1615, 1672, 1760, 1768, 1870, 1936, 1976, 2057, 2080, 2090, 2210, 2288, 2299, 2420, 2431, 2470, 2584, 2717, 2720, 2860, 2992, 3040, 3146, 3230, 3344, 3536, 3553, 3740, 3872, 3952, 4114, 4180, 4199, 4420, 4576, 4598, 4840, 4862, 4940, 5168, 5434, 5720, 5984, 6292, 6460, 6688, 7072, 7106, 7480, 7865, 7904, 8228, 8360, 8398, 8840, 9196, 9680, 9724, 9880, 10285, 10336, 10868, 11440, 11495, 12155, 12584, 12920, 13585, 14212, 14960, 15730, 16456, 16720, 16796, 17680, 17765, 18392, 19360, 19448, 19760, 20570, 20995, 21736, 22880, 22990, 24310, 25168, 25840, 26741, 27170, 28424, 29887, 29920, 31460, 32912, 33440, 33592, 35360, 35530, 36784, 38896, 39083, 39520, 41140, 41990, 43472, 45980, 46189, 48620, 50336, 51680, 53482, 54340, 56848, 59774, 62920, 65824, 67184, 71060, 73568, 77792, 78166, 82280, 83980, 86944, 91960, 92378, 97240, 106964, 108680, 113696, 119548, 125840, 133705, 134368, 142120, 149435, 156332, 164560, 167960, 183920, 184756, 194480, 195415, 213928, 217360, 230945, 239096, 251680, 267410, 284240, 298870, 312664, 329120, 335920, 367840, 369512, 388960, 390830, 427856, 434720, 461890, 478192, 508079, 534820, 568480, 597740, 625328, 671840, 739024, 781660, 855712, 923780, 956384, 1016158, 1069640, 1195480, 1250656, 1478048, 1563320, 1847560, 2032316, 2139280, 2390960, 2540395, 3126640, 3695120, 4064632, 4278560, 4781920, 5080790, 6253280, 7390240, 8129264, 10161580, 16258528, 20323160, 40646320, 81292640]

約数ペア:

[(1, 81292640), (2, 40646320), (4, 20323160), (5, 16258528), (8, 10161580), (10, 8129264), (11, 7390240), (13, 6253280), (16, 5080790), (17, 4781920), (19, 4278560), (20, 4064632), (22, 3695120), (26, 3126640), (32, 2540395), (34, 2390960), (38, 2139280), (40, 2032316), (44, 1847560), (52, 1563320), (55, 1478048), (65, 1250656), (68, 1195480), (76, 1069640), (80, 1016158), (85, 956384), (88, 923780), (95, 855712), (104, 781660), (110, 739024), (121, 671840), (130, 625328), (136, 597740), (143, 568480), (152, 534820), (160, 508079), (170, 478192), (176, 461890), (187, 434720), (190, 427856), (208, 390830), (209, 388960), (220, 369512), (221, 367840), (242, 335920), (247, 329120), (260, 312664), (272, 298870), (286, 284240), (304, 267410), (323, 251680), (340, 239096), (352, 230945), (374, 217360), (380, 213928), (416, 195415), (418, 194480), (440, 184756), (442, 183920), (484, 167960), (494, 164560), (520, 156332), (544, 149435), (572, 142120), (605, 134368), (608, 133705), (646, 125840), (680, 119548), (715, 113696), (748, 108680), (760, 106964), (836, 97240), (880, 92378), (884, 91960), (935, 86944), (968, 83980), (988, 82280), (1040, 78166), (1045, 77792), (1105, 73568), (1144, 71060), (1210, 67184), (1235, 65824), (1292, 62920), (1360, 59774), (1430, 56848), (1496, 54340), (1520, 53482), (1573, 51680), (1615, 50336), (1672, 48620), (1760, 46189), (1768, 45980), (1870, 43472), (1936, 41990), (1976, 41140), (2057, 39520), (2080, 39083), (2090, 38896), (2210, 36784), (2288, 35530), (2299, 35360), (2420, 33592), (2431, 33440), (2470, 32912), (2584, 31460), (2717, 29920), (2720, 29887), (2860, 28424), (2992, 27170), (3040, 26741), (3146, 25840), (3230, 25168), (3344, 24310), (3536, 22990), (3553, 22880), (3740, 21736), (3872, 20995), (3952, 20570), (4114, 19760), (4180, 19448), (4199, 19360), (4420, 18392), (4576, 17765), (4598, 17680), (4840, 16796), (4862, 16720), (4940, 16456), (5168, 15730), (5434, 14960), (5720, 14212), (5984, 13585), (6292, 12920), (6460, 12584), (6688, 12155), (7072, 11495), (7106, 11440), (7480, 10868), (7865, 10336), (7904, 10285), (8228, 9880), (8360, 9724), (8398, 9680), (8840, 9196)]