19865855

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{1471}}^1$

素因数の和:1586

約数の個数: 16

約数和(自身を含む): 24835584

約数和(自身を除く): 4969729

約数列:

[1, 5, 37, 73, 185, 365, 1471, 2701, 7355, 13505, 54427, 107383, 272135, 536915, 3973171, 19865855]

約数ペア:

[(1, 19865855), (5, 3973171), (37, 536915), (73, 272135), (185, 107383), (365, 54427), (1471, 13505), (2701, 7355)]