18721801972

素因数分解:

$2^2\times {\mathrm{443}}^1\times {\mathrm{2237}}^1\times {\mathrm{4723}}^1$

素因数の和:7407

約数の個数: 24

約数和(自身を含む): 32858745696

約数和(自身を除く): 14136943724

約数列:

[1, 2, 4, 443, 886, 1772, 2237, 4474, 4723, 8948, 9446, 18892, 990991, 1981982, 2092289, 3963964, 4184578, 8369156, 10565351, 21130702, 42261404, 4680450493, 9360900986, 18721801972]

約数ペア:

[(1, 18721801972), (2, 9360900986), (4, 4680450493), (443, 42261404), (886, 21130702), (1772, 10565351), (2237, 8369156), (4474, 4184578), (4723, 3963964), (8948, 2092289), (9446, 1981982), (18892, 990991)]