980780500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{280223}}^1$

素因数の和:280249

約数の個数: 48

約数和(自身を含む): 2448036864

約数和(自身を除く): 1467256364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 500, 700, 875, 1750, 3500, 280223, 560446, 1120892, 1401115, 1961561, 2802230, 3923122, 5604460, 7005575, 7846244, 9807805, 14011150, 19615610, 28022300, 35027875, 39231220, 49039025, 70055750, 98078050, 140111500, 196156100, 245195125, 490390250, 980780500]

約数ペア:

[(1, 980780500), (2, 490390250), (4, 245195125), (5, 196156100), (7, 140111500), (10, 98078050), (14, 70055750), (20, 49039025), (25, 39231220), (28, 35027875), (35, 28022300), (50, 19615610), (70, 14011150), (100, 9807805), (125, 7846244), (140, 7005575), (175, 5604460), (250, 3923122), (350, 2802230), (500, 1961561), (700, 1401115), (875, 1120892), (1750, 560446), (3500, 280223)]