3999460

素因数分解:

$2^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{643}}^1$

素因数の和:963

約数の個数: 24

約数和(自身を含む): 8438976

約数和(自身を除く): 4439516

約数列:

[1, 2, 4, 5, 10, 20, 311, 622, 643, 1244, 1286, 1555, 2572, 3110, 3215, 6220, 6430, 12860, 199973, 399946, 799892, 999865, 1999730, 3999460]

約数ペア:

[(1, 3999460), (2, 1999730), (4, 999865), (5, 799892), (10, 399946), (20, 199973), (311, 12860), (622, 6430), (643, 6220), (1244, 3215), (1286, 3110), (1555, 2572)]