20510457

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{443}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 31712256

約数和(自身を除く): 11201799

約数列:

[1, 3, 11, 23, 33, 61, 69, 183, 253, 443, 671, 759, 1329, 1403, 2013, 4209, 4873, 10189, 14619, 15433, 27023, 30567, 46299, 81069, 112079, 297253, 336237, 621529, 891759, 1864587, 6836819, 20510457]

約数ペア:

[(1, 20510457), (3, 6836819), (11, 1864587), (23, 891759), (33, 621529), (61, 336237), (69, 297253), (183, 112079), (253, 81069), (443, 46299), (671, 30567), (759, 27023), (1329, 15433), (1403, 14619), (2013, 10189), (4209, 4873)]