21262660

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{3923}}^1$

素因数の和:4203

約数の個数: 24

約数和(自身を含む): 44827776

約数和(自身を除く): 23565116

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 3923, 5420, 7846, 15692, 19615, 39230, 78460, 1063133, 2126266, 4252532, 5315665, 10631330, 21262660]

約数ペア:

[(1, 21262660), (2, 10631330), (4, 5315665), (5, 4252532), (10, 2126266), (20, 1063133), (271, 78460), (542, 39230), (1084, 19615), (1355, 15692), (2710, 7846), (3923, 5420)]