31900042

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{1999}}^1$

素因数の和:2181

約数の個数: 16

約数和(自身を含む): 48960000

約数和(自身を除く): 17059958

約数列:

[1, 2, 79, 101, 158, 202, 1999, 3998, 7979, 15958, 157921, 201899, 315842, 403798, 15950021, 31900042]

約数ペア:

[(1, 31900042), (2, 15950021), (79, 403798), (101, 315842), (158, 201899), (202, 157921), (1999, 15958), (3998, 7979)]