21226317

素因数分解:

$3^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{4027}}^1$

素因数の和:4288

約数の個数: 16

約数和(自身を含む): 32481792

約数和(自身を除く): 11255475

約数列:

[1, 3, 7, 21, 251, 753, 1757, 4027, 5271, 12081, 28189, 84567, 1010777, 3032331, 7075439, 21226317]

約数ペア:

[(1, 21226317), (3, 7075439), (7, 3032331), (21, 1010777), (251, 84567), (753, 28189), (1757, 12081), (4027, 5271)]