28642420

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{4057}}^1$

素因数の和:4419

約数の個数: 24

約数和(自身を含む): 60334344

約数和(自身を除く): 31691924

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 3530, 4057, 7060, 8114, 16228, 20285, 40570, 81140, 1432121, 2864242, 5728484, 7160605, 14321210, 28642420]

約数ペア:

[(1, 28642420), (2, 14321210), (4, 7160605), (5, 5728484), (10, 2864242), (20, 1432121), (353, 81140), (706, 40570), (1412, 20285), (1765, 16228), (3530, 8114), (4057, 7060)]