123349580

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{31307}}^1$

素因数の和:31513

約数の個数: 24

約数和(自身を含む): 260357328

約数和(自身を除く): 137007748

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 31307, 62614, 125228, 156535, 313070, 626140, 6167479, 12334958, 24669916, 30837395, 61674790, 123349580]

約数ペア:

[(1, 123349580), (2, 61674790), (4, 30837395), (5, 24669916), (10, 12334958), (20, 6167479), (197, 626140), (394, 313070), (788, 156535), (985, 125228), (1970, 62614), (3940, 31307)]