19787345

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:616

約数の個数: 16

約数和(自身を含む): 24312960

約数和(自身を除く): 4525615

約数列:

[1, 5, 71, 139, 355, 401, 695, 2005, 9869, 28471, 49345, 55739, 142355, 278695, 3957469, 19787345]

約数ペア:

[(1, 19787345), (5, 3957469), (71, 278695), (139, 142355), (355, 55739), (401, 49345), (695, 28471), (2005, 9869)]