19984540

素因数分解:

$2^2\times 5^1\times {\mathrm{541}}^1\times {\mathrm{1847}}^1$

素因数の和:2397

約数の個数: 24

約数和(自身を含む): 42067872

約数和(自身を除く): 22083332

約数列:

[1, 2, 4, 5, 10, 20, 541, 1082, 1847, 2164, 2705, 3694, 5410, 7388, 9235, 10820, 18470, 36940, 999227, 1998454, 3996908, 4996135, 9992270, 19984540]

約数ペア:

[(1, 19984540), (2, 9992270), (4, 4996135), (5, 3996908), (10, 1998454), (20, 999227), (541, 36940), (1082, 18470), (1847, 10820), (2164, 9235), (2705, 7388), (3694, 5410)]