21780707

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{809}}^1$

素因数の和:950

約数の個数: 16

約数和(自身を含む): 24948000

約数和(自身を除く): 3167293

約数列:

[1, 13, 19, 109, 247, 809, 1417, 2071, 10517, 15371, 26923, 88181, 199823, 1146353, 1675439, 21780707]

約数ペア:

[(1, 21780707), (13, 1675439), (19, 1146353), (109, 199823), (247, 88181), (809, 26923), (1417, 15371), (2071, 10517)]