21252329

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{823}}^1$

素因数の和:885

約数の個数: 24

約数和(自身を含む): 27053568

約数和(自身を除く): 5801239

約数列:

[1, 7, 17, 31, 49, 119, 217, 527, 823, 833, 1519, 3689, 5761, 13991, 25513, 25823, 40327, 97937, 178591, 433721, 685559, 1250137, 3036047, 21252329]

約数ペア:

[(1, 21252329), (7, 3036047), (17, 1250137), (31, 685559), (49, 433721), (119, 178591), (217, 97937), (527, 40327), (823, 25823), (833, 25513), (1519, 13991), (3689, 5761)]