19966721

素因数分解:

${\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{1171}}^1$

素因数の和:1264

約数の個数: 12

約数和(自身を含む): 21588240

約数和(自身を除く): 1621519

約数列:

[1, 17, 59, 289, 1003, 1171, 17051, 19907, 69089, 338419, 1174513, 19966721]

約数ペア:

[(1, 19966721), (17, 1174513), (59, 338419), (289, 69089), (1003, 19907), (1171, 17051)]