2561620

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{487}}^1$

素因数の和:759

約数の個数: 24

約数和(自身を含む): 5410944

約数和(自身を除く): 2849324

約数列:

[1, 2, 4, 5, 10, 20, 263, 487, 526, 974, 1052, 1315, 1948, 2435, 2630, 4870, 5260, 9740, 128081, 256162, 512324, 640405, 1280810, 2561620]

約数ペア:

[(1, 2561620), (2, 1280810), (4, 640405), (5, 512324), (10, 256162), (20, 128081), (263, 9740), (487, 5260), (526, 4870), (974, 2630), (1052, 2435), (1315, 1948)]