19908959

素因数分解:

$7^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:482

約数の個数: 16

約数和(自身を含む): 23284800

約数和(自身を除く): 3375841

約数列:

[1, 7, 97, 109, 269, 679, 763, 1883, 10573, 26093, 29321, 74011, 182651, 205247, 2844137, 19908959]

約数ペア:

[(1, 19908959), (7, 2844137), (97, 205247), (109, 182651), (269, 74011), (679, 29321), (763, 26093), (1883, 10573)]