21457137

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1259}}^1$

素因数の和:1317

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12411663

約数列:

[1, 3, 13, 19, 23, 39, 57, 69, 247, 299, 437, 741, 897, 1259, 1311, 3777, 5681, 16367, 17043, 23921, 28957, 49101, 71763, 86871, 310973, 376441, 550183, 932919, 1129323, 1650549, 7152379, 21457137]

約数ペア:

[(1, 21457137), (3, 7152379), (13, 1650549), (19, 1129323), (23, 932919), (39, 550183), (57, 376441), (69, 310973), (247, 86871), (299, 71763), (437, 49101), (741, 28957), (897, 23921), (1259, 17043), (1311, 16367), (3777, 5681)]