19800949

素因数分解:

$7^2\times {\mathrm{101}}^1\times {\mathrm{4001}}^1$

素因数の和:4116

約数の個数: 12

約数和(自身を含む): 23267628

約数和(自身を除く): 3466679

約数列:

[1, 7, 49, 101, 707, 4001, 4949, 28007, 196049, 404101, 2828707, 19800949]

約数ペア:

[(1, 19800949), (7, 2828707), (49, 404101), (101, 196049), (707, 28007), (4001, 4949)]