19915063

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{607}}^1$

素因数の和:766

約数の個数: 16

約数和(自身を含む): 23541760

約数和(自身を除く): 3626697

約数列:

[1, 7, 43, 109, 301, 607, 763, 4249, 4687, 26101, 32809, 66163, 182707, 463141, 2845009, 19915063]

約数ペア:

[(1, 19915063), (7, 2845009), (43, 463141), (109, 182707), (301, 66163), (607, 32809), (763, 26101), (4249, 4687)]