18656840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10847}}^1$

素因数の和:10901

約数の個数: 32

約数和(自身を含む): 42958080

約数和(自身を除く): 24301240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 10847, 21694, 43388, 54235, 86776, 108470, 216940, 433880, 466421, 932842, 1865684, 2332105, 3731368, 4664210, 9328420, 18656840]

約数ペア:

[(1, 18656840), (2, 9328420), (4, 4664210), (5, 3731368), (8, 2332105), (10, 1865684), (20, 932842), (40, 466421), (43, 433880), (86, 216940), (172, 108470), (215, 86776), (344, 54235), (430, 43388), (860, 21694), (1720, 10847)]