21340927

素因数分解:

${\mathrm{31}}^2\times {\mathrm{53}}^1\times {\mathrm{419}}^1$

素因数の和:534

約数の個数: 12

約数和(自身を含む): 22521240

約数和(自身を除く): 1180313

約数列:

[1, 31, 53, 419, 961, 1643, 12989, 22207, 50933, 402659, 688417, 21340927]

約数ペア:

[(1, 21340927), (31, 688417), (53, 402659), (419, 50933), (961, 22207), (1643, 12989)]