20198213

素因数分解:

$7^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1\times {\mathrm{197}}^1$

素因数の和:452

約数の個数: 16

約数和(自身を含む): 23595264

約数和(自身を除く): 3397051

約数列:

[1, 7, 97, 151, 197, 679, 1057, 1379, 14647, 19109, 29747, 102529, 133763, 208229, 2885459, 20198213]

約数ペア:

[(1, 20198213), (7, 2885459), (97, 208229), (151, 133763), (197, 102529), (679, 29747), (1057, 19109), (1379, 14647)]