278004920

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{36011}}^1$

素因数の和:36215

約数の個数: 32

約数和(自身を含む): 628769520

約数和(自身を除く): 350764600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 3860, 7720, 36011, 72022, 144044, 180055, 288088, 360110, 720220, 1440440, 6950123, 13900246, 27800492, 34750615, 55600984, 69501230, 139002460, 278004920]

約数ペア:

[(1, 278004920), (2, 139002460), (4, 69501230), (5, 55600984), (8, 34750615), (10, 27800492), (20, 13900246), (40, 6950123), (193, 1440440), (386, 720220), (772, 360110), (965, 288088), (1544, 180055), (1930, 144044), (3860, 72022), (7720, 36011)]