19898993

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{619}}^1$

素因数の和:728

約数の個数: 16

約数和(自身を含む): 22141440

約数和(自身を除く): 2242447

約数列:

[1, 17, 31, 61, 527, 619, 1037, 1891, 10523, 19189, 32147, 37759, 326213, 641903, 1170529, 19898993]

約数ペア:

[(1, 19898993), (17, 1170529), (31, 641903), (61, 326213), (527, 37759), (619, 32147), (1037, 19189), (1891, 10523)]