20281718

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1\times {\mathrm{613}}^1$

素因数の和:919

約数の個数: 16

約数和(自身を含む): 31034016

約数和(自身を除く): 10752298

約数列:

[1, 2, 71, 142, 233, 466, 613, 1226, 16543, 33086, 43523, 87046, 142829, 285658, 10140859, 20281718]

約数ペア:

[(1, 20281718), (2, 10140859), (71, 285658), (142, 142829), (233, 87046), (466, 43523), (613, 33086), (1226, 16543)]