20644687

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{641}}^1$

素因数の和:798

約数の個数: 16

約数和(自身を含む): 24406272

約数和(自身を除く): 3761585

約数列:

[1, 7, 43, 107, 301, 641, 749, 4487, 4601, 27563, 32207, 68587, 192941, 480109, 2949241, 20644687]

約数ペア:

[(1, 20644687), (7, 2949241), (43, 480109), (107, 192941), (301, 68587), (641, 32207), (749, 27563), (4487, 4601)]