20540007

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{40039}}^1$

素因数の和:40067

約数の個数: 16

約数和(自身を含む): 32032000

約数和(自身を除く): 11491993

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 40039, 120117, 360351, 760741, 1081053, 2282223, 6846669, 20540007]

約数ペア:

[(1, 20540007), (3, 6846669), (9, 2282223), (19, 1081053), (27, 760741), (57, 360351), (171, 120117), (513, 40039)]