2217080

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1289}}^1$

素因数の和:1343

約数の個数: 32

約数和(自身を含む): 5108400

約数和(自身を除く): 2891320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1289, 1720, 2578, 5156, 6445, 10312, 12890, 25780, 51560, 55427, 110854, 221708, 277135, 443416, 554270, 1108540, 2217080]

約数ペア:

[(1, 2217080), (2, 1108540), (4, 554270), (5, 443416), (8, 277135), (10, 221708), (20, 110854), (40, 55427), (43, 51560), (86, 25780), (172, 12890), (215, 10312), (344, 6445), (430, 5156), (860, 2578), (1289, 1720)]