81721584

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:308

約数の個数: 240

約数和(自身を含む): 292481280

約数和(自身を除く): 210759696

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 17, 18, 19, 21, 24, 28, 34, 36, 38, 42, 48, 51, 56, 57, 63, 68, 72, 76, 84, 102, 112, 114, 119, 126, 133, 136, 144, 152, 153, 168, 171, 204, 228, 238, 251, 252, 266, 272, 304, 306, 323, 336, 342, 357, 399, 408, 456, 476, 502, 504, 532, 612, 646, 684, 714, 753, 798, 816, 912, 952, 969, 1004, 1008, 1064, 1071, 1197, 1224, 1292, 1368, 1428, 1506, 1596, 1757, 1904, 1938, 2008, 2128, 2142, 2259, 2261, 2394, 2448, 2584, 2736, 2856, 2907, 3012, 3192, 3514, 3876, 4016, 4267, 4284, 4518, 4522, 4769, 4788, 5168, 5271, 5712, 5814, 6024, 6384, 6783, 7028, 7752, 8534, 8568, 9036, 9044, 9538, 9576, 10542, 11628, 12048, 12801, 13566, 14056, 14307, 15504, 15813, 17068, 17136, 18072, 18088, 19076, 19152, 20349, 21084, 23256, 25602, 27132, 28112, 28614, 29869, 31626, 33383, 34136, 36144, 36176, 38152, 38403, 40698, 42168, 42921, 46512, 51204, 54264, 57228, 59738, 63252, 66766, 68272, 76304, 76806, 81073, 81396, 84336, 85842, 89607, 100149, 102408, 108528, 114456, 119476, 126504, 133532, 153612, 162146, 162792, 171684, 179214, 200298, 204816, 228912, 238952, 243219, 253008, 267064, 268821, 300447, 307224, 324292, 325584, 343368, 358428, 400596, 477904, 486438, 534128, 537642, 567511, 600894, 614448, 648584, 686736, 716856, 729657, 801192, 972876, 1075284, 1135022, 1201788, 1297168, 1433712, 1459314, 1602384, 1702533, 1945752, 2150568, 2270044, 2403576, 2918628, 3405066, 3891504, 4301136, 4540088, 4807152, 5107599, 5837256, 6810132, 9080176, 10215198, 11674512, 13620264, 20430396, 27240528, 40860792, 81721584]

約数ペア:

[(1, 81721584), (2, 40860792), (3, 27240528), (4, 20430396), (6, 13620264), (7, 11674512), (8, 10215198), (9, 9080176), (12, 6810132), (14, 5837256), (16, 5107599), (17, 4807152), (18, 4540088), (19, 4301136), (21, 3891504), (24, 3405066), (28, 2918628), (34, 2403576), (36, 2270044), (38, 2150568), (42, 1945752), (48, 1702533), (51, 1602384), (56, 1459314), (57, 1433712), (63, 1297168), (68, 1201788), (72, 1135022), (76, 1075284), (84, 972876), (102, 801192), (112, 729657), (114, 716856), (119, 686736), (126, 648584), (133, 614448), (136, 600894), (144, 567511), (152, 537642), (153, 534128), (168, 486438), (171, 477904), (204, 400596), (228, 358428), (238, 343368), (251, 325584), (252, 324292), (266, 307224), (272, 300447), (304, 268821), (306, 267064), (323, 253008), (336, 243219), (342, 238952), (357, 228912), (399, 204816), (408, 200298), (456, 179214), (476, 171684), (502, 162792), (504, 162146), (532, 153612), (612, 133532), (646, 126504), (684, 119476), (714, 114456), (753, 108528), (798, 102408), (816, 100149), (912, 89607), (952, 85842), (969, 84336), (1004, 81396), (1008, 81073), (1064, 76806), (1071, 76304), (1197, 68272), (1224, 66766), (1292, 63252), (1368, 59738), (1428, 57228), (1506, 54264), (1596, 51204), (1757, 46512), (1904, 42921), (1938, 42168), (2008, 40698), (2128, 38403), (2142, 38152), (2259, 36176), (2261, 36144), (2394, 34136), (2448, 33383), (2584, 31626), (2736, 29869), (2856, 28614), (2907, 28112), (3012, 27132), (3192, 25602), (3514, 23256), (3876, 21084), (4016, 20349), (4267, 19152), (4284, 19076), (4518, 18088), (4522, 18072), (4769, 17136), (4788, 17068), (5168, 15813), (5271, 15504), (5712, 14307), (5814, 14056), (6024, 13566), (6384, 12801), (6783, 12048), (7028, 11628), (7752, 10542), (8534, 9576), (8568, 9538), (9036, 9044)]