989780242

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{4090001}}^1$

素因数の和:4090025

約数の個数: 12

約数和(自身を含む): 1631910798

約数和(自身を除く): 642130556

約数列:

[1, 2, 11, 22, 121, 242, 4090001, 8180002, 44990011, 89980022, 494890121, 989780242]

約数ペア:

[(1, 989780242), (2, 494890121), (11, 89980022), (22, 44990011), (121, 8180002), (242, 4090001)]