20801223

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{317}}^2$

素因数の和:663

約数の個数: 18

約数和(自身を含む): 31451784

約数和(自身を除く): 10650561

約数列:

[1, 3, 9, 23, 69, 207, 317, 951, 2853, 7291, 21873, 65619, 100489, 301467, 904401, 2311247, 6933741, 20801223]

約数ペア:

[(1, 20801223), (3, 6933741), (9, 2311247), (23, 904401), (69, 301467), (207, 100489), (317, 65619), (951, 21873), (2853, 7291)]