8243260

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{643}}^1$

素因数の和:1293

約数の個数: 24

約数和(自身を含む): 17364816

約数和(自身を除く): 9121556

約数列:

[1, 2, 4, 5, 10, 20, 641, 643, 1282, 1286, 2564, 2572, 3205, 3215, 6410, 6430, 12820, 12860, 412163, 824326, 1648652, 2060815, 4121630, 8243260]

約数ペア:

[(1, 8243260), (2, 4121630), (4, 2060815), (5, 1648652), (10, 824326), (20, 412163), (641, 12860), (643, 12820), (1282, 6430), (1286, 6410), (2564, 3215), (2572, 3205)]