21253833

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{2003}}^1$

素因数の和:2146

約数の個数: 20

約数和(自身を含む): 32007888

約数和(自身を除く): 10754055

約数列:

[1, 3, 9, 27, 81, 131, 393, 1179, 2003, 3537, 6009, 10611, 18027, 54081, 162243, 262393, 787179, 2361537, 7084611, 21253833]

約数ペア:

[(1, 21253833), (3, 7084611), (9, 2361537), (27, 787179), (81, 262393), (131, 162243), (393, 54081), (1179, 18027), (2003, 10611), (3537, 6009)]