20990767

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{223}}^1$

素因数の和:367

約数の個数: 24

約数和(自身を含む): 26199936

約数和(自身を除く): 5209169

約数列:

[1, 7, 17, 49, 113, 119, 223, 791, 833, 1561, 1921, 3791, 5537, 10927, 13447, 25199, 26537, 94129, 176393, 185759, 428383, 1234751, 2998681, 20990767]

約数ペア:

[(1, 20990767), (7, 2998681), (17, 1234751), (49, 428383), (113, 185759), (119, 176393), (223, 94129), (791, 26537), (833, 25199), (1561, 13447), (1921, 10927), (3791, 5537)]