119979980

素因数分解:

$2^2\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{3001}}^1$

素因数の和:5009

約数の個数: 24

約数和(自身を含む): 252168000

約数和(自身を除く): 132188020

約数列:

[1, 2, 4, 5, 10, 20, 1999, 3001, 3998, 6002, 7996, 9995, 12004, 15005, 19990, 30010, 39980, 60020, 5998999, 11997998, 23995996, 29994995, 59989990, 119979980]

約数ペア:

[(1, 119979980), (2, 59989990), (4, 29994995), (5, 23995996), (10, 11997998), (20, 5998999), (1999, 60020), (3001, 39980), (3998, 30010), (6002, 19990), (7996, 15005), (9995, 12004)]