21158727

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{3167}}^1$

素因数の和:3318

約数の個数: 16

約数和(自身を含む): 30108672

約数和(自身を除く): 8949945

約数列:

[1, 3, 17, 51, 131, 393, 2227, 3167, 6681, 9501, 53839, 161517, 414877, 1244631, 7052909, 21158727]

約数ペア:

[(1, 21158727), (3, 7052909), (17, 1244631), (51, 414877), (131, 161517), (393, 53839), (2227, 9501), (3167, 6681)]