19787980

素因数分解:

$2^2\times 5^1\times {\mathrm{757}}^1\times {\mathrm{1307}}^1$

素因数の和:2073

約数の個数: 24

約数和(自身を含む): 41641488

約数和(自身を除く): 21853508

約数列:

[1, 2, 4, 5, 10, 20, 757, 1307, 1514, 2614, 3028, 3785, 5228, 6535, 7570, 13070, 15140, 26140, 989399, 1978798, 3957596, 4946995, 9893990, 19787980]

約数ペア:

[(1, 19787980), (2, 9893990), (4, 4946995), (5, 3957596), (10, 1978798), (20, 989399), (757, 26140), (1307, 15140), (1514, 13070), (2614, 7570), (3028, 6535), (3785, 5228)]