20996810

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{34421}}^1$

素因数の和:34489

約数の個数: 16

約数和(自身を含む): 38414952

約数和(自身を除く): 17418142

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 34421, 68842, 172105, 344210, 2099681, 4199362, 10498405, 20996810]

約数ペア:

[(1, 20996810), (2, 10498405), (5, 4199362), (10, 2099681), (61, 344210), (122, 172105), (305, 68842), (610, 34421)]