7881340

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1259}}^1$

素因数の和:1581

約数の個数: 24

約数和(自身を含む): 16616880

約数和(自身を除く): 8735540

約数列:

[1, 2, 4, 5, 10, 20, 313, 626, 1252, 1259, 1565, 2518, 3130, 5036, 6260, 6295, 12590, 25180, 394067, 788134, 1576268, 1970335, 3940670, 7881340]

約数ペア:

[(1, 7881340), (2, 3940670), (4, 1970335), (5, 1576268), (10, 788134), (20, 394067), (313, 25180), (626, 12590), (1252, 6295), (1259, 6260), (1565, 5036), (2518, 3130)]