19979271

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{56921}}^1$

素因数の和:56943

約数の個数: 16

約数和(自身を含む): 31876320

約数和(自身を除く): 11897049

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 56921, 170763, 512289, 739973, 1536867, 2219919, 6659757, 19979271]

約数ペア:

[(1, 19979271), (3, 6659757), (9, 2219919), (13, 1536867), (27, 739973), (39, 512289), (117, 170763), (351, 56921)]