19720688

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{94811}}^1$

素因数の和:94832

約数の個数: 20

約数和(自身を含む): 41148408

約数和(自身を除く): 21427720

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 94811, 189622, 379244, 758488, 1232543, 1516976, 2465086, 4930172, 9860344, 19720688]

約数ペア:

[(1, 19720688), (2, 9860344), (4, 4930172), (8, 2465086), (13, 1516976), (16, 1232543), (26, 758488), (52, 379244), (104, 189622), (208, 94811)]