20812707

素因数分解:

$3^5\times {\mathrm{41}}^1\times {\mathrm{2089}}^1$

素因数の和:2145

約数の個数: 24

約数和(自身を含む): 31951920

約数和(自身を除く): 11139213

約数列:

[1, 3, 9, 27, 41, 81, 123, 243, 369, 1107, 2089, 3321, 6267, 9963, 18801, 56403, 85649, 169209, 256947, 507627, 770841, 2312523, 6937569, 20812707]

約数ペア:

[(1, 20812707), (3, 6937569), (9, 2312523), (27, 770841), (41, 507627), (81, 256947), (123, 169209), (243, 85649), (369, 56403), (1107, 18801), (2089, 9963), (3321, 6267)]