20971870

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{44621}}^1$

素因数の和:44675

約数の個数: 16

約数和(自身を含む): 38553408

約数和(自身を除く): 17581538

約数列:

[1, 2, 5, 10, 47, 94, 235, 470, 44621, 89242, 223105, 446210, 2097187, 4194374, 10485935, 20971870]

約数ペア:

[(1, 20971870), (2, 10485935), (5, 4194374), (10, 2097187), (47, 446210), (94, 223105), (235, 89242), (470, 44621)]