20187055

素因数分解:

$5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{7901}}^1$

素因数の和:7986

約数の個数: 16

約数和(自身を含む): 28067904

約数和(自身を除く): 7880849

約数列:

[1, 5, 7, 35, 73, 365, 511, 2555, 7901, 39505, 55307, 276535, 576773, 2883865, 4037411, 20187055]

約数ペア:

[(1, 20187055), (5, 4037411), (7, 2883865), (35, 576773), (73, 276535), (365, 55307), (511, 39505), (2555, 7901)]