21221282007

素因数分解:

$3^2\times {\mathrm{643}}^1\times {\mathrm{3667061}}^1$

素因数の和:3667710

約数の個数: 12

約数和(自身を含む): 30700643064

約数和(自身を除く): 9479361057

約数列:

[1, 3, 9, 643, 1929, 5787, 3667061, 11001183, 33003549, 2357920223, 7073760669, 21221282007]

約数ペア:

[(1, 21221282007), (3, 7073760669), (9, 2357920223), (643, 33003549), (1929, 11001183), (5787, 3667061)]