19871335

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{823}}^1$

素因数の和:1278

約数の個数: 16

約数和(自身を含む): 26104320

約数和(自身を除く): 6232985

約数列:

[1, 5, 11, 55, 439, 823, 2195, 4115, 4829, 9053, 24145, 45265, 361297, 1806485, 3974267, 19871335]

約数ペア:

[(1, 19871335), (5, 3974267), (11, 1806485), (55, 361297), (439, 45265), (823, 24145), (2195, 9053), (4115, 4829)]