19439810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{653}}^1$

素因数の和:902

約数の個数: 32

約数和(自身を含む): 37905840

約数和(自身を除く): 18466030

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 229, 458, 653, 1145, 1306, 2290, 2977, 3265, 5954, 6530, 8489, 14885, 16978, 29770, 42445, 84890, 149537, 299074, 747685, 1495370, 1943981, 3887962, 9719905, 19439810]

約数ペア:

[(1, 19439810), (2, 9719905), (5, 3887962), (10, 1943981), (13, 1495370), (26, 747685), (65, 299074), (130, 149537), (229, 84890), (458, 42445), (653, 29770), (1145, 16978), (1306, 14885), (2290, 8489), (2977, 6530), (3265, 5954)]