20499787

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{521}}^1$

素因数の和:619

約数の個数: 24

約数和(自身を含む): 26421552

約数和(自身を除く): 5921765

約数列:

[1, 7, 11, 49, 73, 77, 511, 521, 539, 803, 3577, 3647, 5621, 5731, 25529, 38033, 39347, 40117, 266231, 280819, 418363, 1863617, 2928541, 20499787]

約数ペア:

[(1, 20499787), (7, 2928541), (11, 1863617), (49, 418363), (73, 280819), (77, 266231), (511, 40117), (521, 39347), (539, 38033), (803, 25529), (3577, 5731), (3647, 5621)]