21000751983

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1\times {\mathrm{739}}^1$

素因数の和:1034

約数の個数: 80

約数和(自身を含む): 33093984000

約数和(自身を除く): 12093232017

約数列:

[1, 3, 9, 27, 41, 43, 81, 123, 129, 199, 369, 387, 597, 739, 1107, 1161, 1763, 1791, 2217, 3321, 3483, 5289, 5373, 6651, 8159, 8557, 15867, 16119, 19953, 24477, 25671, 30299, 31777, 47601, 59859, 73431, 77013, 90897, 95331, 142803, 147061, 220293, 231039, 272691, 285993, 350837, 441183, 660879, 693117, 818073, 857979, 1052511, 1302857, 1323549, 2454219, 2573937, 3157533, 3908571, 3970647, 6029501, 6323623, 9472599, 11725713, 11911941, 18088503, 18970869, 28417797, 35177139, 54265509, 56912607, 105531417, 162796527, 170737821, 259268543, 488389581, 512213463, 777805629, 2333416887, 7000250661, 21000751983]

約数ペア:

[(1, 21000751983), (3, 7000250661), (9, 2333416887), (27, 777805629), (41, 512213463), (43, 488389581), (81, 259268543), (123, 170737821), (129, 162796527), (199, 105531417), (369, 56912607), (387, 54265509), (597, 35177139), (739, 28417797), (1107, 18970869), (1161, 18088503), (1763, 11911941), (1791, 11725713), (2217, 9472599), (3321, 6323623), (3483, 6029501), (5289, 3970647), (5373, 3908571), (6651, 3157533), (8159, 2573937), (8557, 2454219), (15867, 1323549), (16119, 1302857), (19953, 1052511), (24477, 857979), (25671, 818073), (30299, 693117), (31777, 660879), (47601, 441183), (59859, 350837), (73431, 285993), (77013, 272691), (90897, 231039), (95331, 220293), (142803, 147061)]