81870810

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:141

約数の個数: 192

約数和(自身を含む): 254638080

約数和(自身を除く): 172767270

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 19, 21, 30, 34, 35, 38, 42, 51, 57, 70, 71, 85, 95, 102, 105, 114, 119, 133, 142, 170, 190, 210, 213, 238, 255, 266, 285, 289, 323, 355, 357, 399, 426, 497, 510, 570, 578, 595, 646, 665, 710, 714, 798, 867, 969, 994, 1065, 1190, 1207, 1330, 1349, 1445, 1491, 1615, 1734, 1785, 1938, 1995, 2023, 2130, 2261, 2414, 2485, 2698, 2890, 2982, 3230, 3570, 3621, 3990, 4046, 4047, 4335, 4522, 4845, 4970, 5491, 6035, 6069, 6745, 6783, 7242, 7455, 8094, 8449, 8670, 9443, 9690, 10115, 10982, 11305, 12070, 12138, 13490, 13566, 14910, 16473, 16898, 18105, 18886, 20230, 20235, 20519, 22610, 22933, 25347, 27455, 28329, 30345, 32946, 33915, 36210, 38437, 40470, 41038, 42245, 45866, 47215, 50694, 54910, 56658, 60690, 61557, 67830, 68799, 76874, 82365, 84490, 94430, 102595, 114665, 115311, 123114, 126735, 137598, 141645, 143633, 160531, 164730, 192185, 205190, 229330, 230622, 253470, 283290, 287266, 307785, 321062, 343995, 384370, 389861, 430899, 481593, 576555, 615570, 687990, 718165, 779722, 802655, 861798, 963186, 1153110, 1169583, 1436330, 1605310, 1949305, 2154495, 2339166, 2407965, 2729027, 3898610, 4308990, 4815930, 5458054, 5847915, 8187081, 11695830, 13645135, 16374162, 27290270, 40935405, 81870810]

約数ペア:

[(1, 81870810), (2, 40935405), (3, 27290270), (5, 16374162), (6, 13645135), (7, 11695830), (10, 8187081), (14, 5847915), (15, 5458054), (17, 4815930), (19, 4308990), (21, 3898610), (30, 2729027), (34, 2407965), (35, 2339166), (38, 2154495), (42, 1949305), (51, 1605310), (57, 1436330), (70, 1169583), (71, 1153110), (85, 963186), (95, 861798), (102, 802655), (105, 779722), (114, 718165), (119, 687990), (133, 615570), (142, 576555), (170, 481593), (190, 430899), (210, 389861), (213, 384370), (238, 343995), (255, 321062), (266, 307785), (285, 287266), (289, 283290), (323, 253470), (355, 230622), (357, 229330), (399, 205190), (426, 192185), (497, 164730), (510, 160531), (570, 143633), (578, 141645), (595, 137598), (646, 126735), (665, 123114), (710, 115311), (714, 114665), (798, 102595), (867, 94430), (969, 84490), (994, 82365), (1065, 76874), (1190, 68799), (1207, 67830), (1330, 61557), (1349, 60690), (1445, 56658), (1491, 54910), (1615, 50694), (1734, 47215), (1785, 45866), (1938, 42245), (1995, 41038), (2023, 40470), (2130, 38437), (2261, 36210), (2414, 33915), (2485, 32946), (2698, 30345), (2890, 28329), (2982, 27455), (3230, 25347), (3570, 22933), (3621, 22610), (3990, 20519), (4046, 20235), (4047, 20230), (4335, 18886), (4522, 18105), (4845, 16898), (4970, 16473), (5491, 14910), (6035, 13566), (6069, 13490), (6745, 12138), (6783, 12070), (7242, 11305), (7455, 10982), (8094, 10115), (8449, 9690), (8670, 9443)]