19902751

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{811}}^1$

素因数の和:942

約数の個数: 16

約数和(自身を含む): 22917888

約数和(自身を除く): 3015137

約数列:

[1, 11, 23, 97, 253, 811, 1067, 2231, 8921, 18653, 24541, 78667, 205183, 865337, 1809341, 19902751]

約数ペア:

[(1, 19902751), (11, 1809341), (23, 865337), (97, 205183), (253, 78667), (811, 24541), (1067, 18653), (2231, 8921)]