20787845

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{337}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 27463176

約数和(自身を除く): 6675331

約数列:

[1, 5, 13, 65, 73, 169, 337, 365, 845, 949, 1685, 4381, 4745, 12337, 21905, 24601, 56953, 61685, 123005, 284765, 319813, 1599065, 4157569, 20787845]

約数ペア:

[(1, 20787845), (5, 4157569), (13, 1599065), (65, 319813), (73, 284765), (169, 123005), (337, 61685), (365, 56953), (845, 24601), (949, 21905), (1685, 12337), (4381, 4745)]