21426363

素因数分解:

$3^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:126

約数の個数: 80

約数和(自身を含む): 40144896

約数和(自身を除く): 18718533

約数列:

[1, 3, 7, 9, 21, 23, 27, 31, 53, 63, 69, 81, 93, 159, 161, 189, 207, 217, 279, 371, 477, 483, 567, 621, 651, 713, 837, 1113, 1219, 1431, 1449, 1643, 1863, 1953, 2139, 2511, 3339, 3657, 4293, 4347, 4929, 4991, 5859, 6417, 8533, 10017, 10971, 11501, 13041, 14787, 14973, 17577, 19251, 25599, 30051, 32913, 34503, 37789, 44361, 44919, 57753, 76797, 98739, 103509, 113367, 133083, 134757, 230391, 264523, 310527, 340101, 404271, 691173, 793569, 931581, 1020303, 2380707, 3060909, 7142121, 21426363]

約数ペア:

[(1, 21426363), (3, 7142121), (7, 3060909), (9, 2380707), (21, 1020303), (23, 931581), (27, 793569), (31, 691173), (53, 404271), (63, 340101), (69, 310527), (81, 264523), (93, 230391), (159, 134757), (161, 133083), (189, 113367), (207, 103509), (217, 98739), (279, 76797), (371, 57753), (477, 44919), (483, 44361), (567, 37789), (621, 34503), (651, 32913), (713, 30051), (837, 25599), (1113, 19251), (1219, 17577), (1431, 14973), (1449, 14787), (1643, 13041), (1863, 11501), (1953, 10971), (2139, 10017), (2511, 8533), (3339, 6417), (3657, 5859), (4293, 4991), (4347, 4929)]