16640979

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{2131}}^1$

素因数の和:2290

約数の個数: 16

約数和(自身を含む): 23537280

約数和(自身を除く): 6896301

約数列:

[1, 3, 19, 57, 137, 411, 2131, 2603, 6393, 7809, 40489, 121467, 291947, 875841, 5546993, 16640979]

約数ペア:

[(1, 16640979), (3, 5546993), (19, 875841), (57, 291947), (137, 121467), (411, 40489), (2131, 7809), (2603, 6393)]