19741337

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 26210304

約数和(自身を除く): 6468967

約数列:

[1, 7, 11, 23, 71, 77, 157, 161, 253, 497, 781, 1099, 1633, 1727, 1771, 3611, 5467, 11147, 11431, 12089, 17963, 25277, 39721, 78029, 122617, 125741, 256381, 278047, 858319, 1794667, 2820191, 19741337]

約数ペア:

[(1, 19741337), (7, 2820191), (11, 1794667), (23, 858319), (71, 278047), (77, 256381), (157, 125741), (161, 122617), (253, 78029), (497, 39721), (781, 25277), (1099, 17963), (1633, 12089), (1727, 11431), (1771, 11147), (3611, 5467)]