1997891

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:290

約数の個数: 16

約数和(自身を含む): 2456064

約数和(自身を除く): 458173

約数列:

[1, 7, 17, 103, 119, 163, 721, 1141, 1751, 2771, 12257, 16789, 19397, 117523, 285413, 1997891]

約数ペア:

[(1, 1997891), (7, 285413), (17, 117523), (103, 19397), (119, 16789), (163, 12257), (721, 2771), (1141, 1751)]