20699469

素因数分解:

$3^5\times 7^1\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 36388352

約数和(自身を除く): 15688883

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 243, 283, 301, 387, 567, 849, 903, 1161, 1701, 1981, 2547, 2709, 3483, 5943, 7641, 8127, 10449, 12169, 17829, 22923, 24381, 36507, 53487, 68769, 73143, 85183, 109521, 160461, 255549, 328563, 481383, 766647, 985689, 2299941, 2957067, 6899823, 20699469]

約数ペア:

[(1, 20699469), (3, 6899823), (7, 2957067), (9, 2299941), (21, 985689), (27, 766647), (43, 481383), (63, 328563), (81, 255549), (129, 160461), (189, 109521), (243, 85183), (283, 73143), (301, 68769), (387, 53487), (567, 36507), (849, 24381), (903, 22923), (1161, 17829), (1701, 12169), (1981, 10449), (2547, 8127), (2709, 7641), (3483, 5943)]