128423673

素因数分解:

$3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{9661}}^1$

素因数の和:9885

約数の個数: 24

約数和(自身を含む): 213027776

約数和(自身を除く): 84604103

約数列:

[1, 3, 7, 9, 21, 63, 211, 633, 1477, 1899, 4431, 9661, 13293, 28983, 67627, 86949, 202881, 608643, 2038471, 6115413, 14269297, 18346239, 42807891, 128423673]

約数ペア:

[(1, 128423673), (3, 42807891), (7, 18346239), (9, 14269297), (21, 6115413), (63, 2038471), (211, 608643), (633, 202881), (1477, 86949), (1899, 67627), (4431, 28983), (9661, 13293)]