21000658257

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1\times {\mathrm{239}}^1$

素因数の和:539

約数の個数: 96

約数和(自身を含む): 33462374400

約数和(自身を除く): 12461716143

約数列:

[1, 3, 9, 19, 41, 57, 83, 123, 151, 171, 239, 249, 369, 453, 717, 747, 779, 1359, 1577, 2151, 2337, 2869, 3403, 4541, 4731, 6191, 7011, 8607, 9799, 10209, 12533, 13623, 14193, 18573, 19837, 25821, 29397, 30627, 36089, 37599, 40869, 55719, 59511, 64657, 88191, 108267, 112797, 117629, 178533, 186181, 193971, 238127, 324801, 352887, 376903, 513853, 558543, 581913, 685691, 714381, 813317, 1058661, 1130709, 1479649, 1541559, 1675629, 2057073, 2143143, 2439951, 2995387, 3392127, 4438947, 4624677, 6171219, 7319853, 8986161, 9763207, 13316841, 15453023, 26958483, 28113331, 29289621, 46359069, 56912353, 84339993, 87868863, 122810867, 139077207, 170737059, 253019979, 368432601, 512211177, 1105297803, 2333406473, 7000219419, 21000658257]

約数ペア:

[(1, 21000658257), (3, 7000219419), (9, 2333406473), (19, 1105297803), (41, 512211177), (57, 368432601), (83, 253019979), (123, 170737059), (151, 139077207), (171, 122810867), (239, 87868863), (249, 84339993), (369, 56912353), (453, 46359069), (717, 29289621), (747, 28113331), (779, 26958483), (1359, 15453023), (1577, 13316841), (2151, 9763207), (2337, 8986161), (2869, 7319853), (3403, 6171219), (4541, 4624677), (4731, 4438947), (6191, 3392127), (7011, 2995387), (8607, 2439951), (9799, 2143143), (10209, 2057073), (12533, 1675629), (13623, 1541559), (14193, 1479649), (18573, 1130709), (19837, 1058661), (25821, 813317), (29397, 714381), (30627, 685691), (36089, 581913), (37599, 558543), (40869, 513853), (55719, 376903), (59511, 352887), (64657, 324801), (88191, 238127), (108267, 193971), (112797, 186181), (117629, 178533)]