21375681

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{6871}}^1$

素因数の和:6952

約数の個数: 16

約数和(自身を含む): 30676608

約数和(自身を除く): 9300927

約数列:

[1, 3, 17, 51, 61, 183, 1037, 3111, 6871, 20613, 116807, 350421, 419131, 1257393, 7125227, 21375681]

約数ペア:

[(1, 21375681), (3, 7125227), (17, 1257393), (51, 419131), (61, 350421), (183, 116807), (1037, 20613), (3111, 6871)]