21971257441

素因数分解:

$7^2\times {\mathrm{2719}}^1\times {\mathrm{164911}}^1$

素因数の和:167644

約数の個数: 12

約数和(自身を含む): 25567956480

約数和(自身を除く): 3596699039

約数列:

[1, 7, 49, 2719, 19033, 133231, 164911, 1154377, 8080639, 448393009, 3138751063, 21971257441]

約数ペア:

[(1, 21971257441), (7, 3138751063), (49, 448393009), (2719, 8080639), (19033, 1154377), (133231, 164911)]