20109159

素因数分解:

$3^2\times 7^2\times {\mathrm{45599}}^1$

素因数の和:45619

約数の個数: 18

約数和(自身を含む): 33789600

約数和(自身を除く): 13680441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45599, 136797, 319193, 410391, 957579, 2234351, 2872737, 6703053, 20109159]

約数ペア:

[(1, 20109159), (3, 6703053), (7, 2872737), (9, 2234351), (21, 957579), (49, 410391), (63, 319193), (147, 136797), (441, 45599)]