21151293

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{971}}^1$

素因数の和:1164

約数の個数: 16

約数和(自身を含む): 28973376

約数和(自身を除く): 7822083

約数列:

[1, 3, 53, 137, 159, 411, 971, 2913, 7261, 21783, 51463, 133027, 154389, 399081, 7050431, 21151293]

約数ペア:

[(1, 21151293), (3, 7050431), (53, 399081), (137, 154389), (159, 133027), (411, 51463), (971, 21783), (2913, 7261)]