20505884

素因数分解:

$2^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{6481}}^1$

素因数の和:6605

約数の個数: 24

約数和(自身を含む): 41381088

約数和(自身を除く): 20875204

約数列:

[1, 2, 4, 7, 14, 28, 113, 226, 452, 791, 1582, 3164, 6481, 12962, 25924, 45367, 90734, 181468, 732353, 1464706, 2929412, 5126471, 10252942, 20505884]

約数ペア:

[(1, 20505884), (2, 10252942), (4, 5126471), (7, 2929412), (14, 1464706), (28, 732353), (113, 181468), (226, 90734), (452, 45367), (791, 25924), (1582, 12962), (3164, 6481)]