77643920

素因数分解:

$2^4\times 5^1\times {\mathrm{970549}}^1$

素因数の和:970562

約数の個数: 20

約数和(自身を含む): 180522300

約数和(自身を除く): 102878380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 970549, 1941098, 3882196, 4852745, 7764392, 9705490, 15528784, 19410980, 38821960, 77643920]

約数ペア:

[(1, 77643920), (2, 38821960), (4, 19410980), (5, 15528784), (8, 9705490), (10, 7764392), (16, 4852745), (20, 3882196), (40, 1941098), (80, 970549)]