20178389

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{967}}^1$

素因数の和:1256

約数の個数: 16

約数和(自身を含む): 25276416

約数和(自身を除く): 5098027

約数列:

[1, 7, 11, 77, 271, 967, 1897, 2981, 6769, 10637, 20867, 74459, 262057, 1834399, 2882627, 20178389]

約数ペア:

[(1, 20178389), (7, 2882627), (11, 1834399), (77, 262057), (271, 74459), (967, 20867), (1897, 10637), (2981, 6769)]