25686940

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{11783}}^1$

素因数の和:11901

約数の個数: 24

約数和(自身を含む): 54442080

約数和(自身を除く): 28755140

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 11783, 23566, 47132, 58915, 117830, 235660, 1284347, 2568694, 5137388, 6421735, 12843470, 25686940]

約数ペア:

[(1, 25686940), (2, 12843470), (4, 6421735), (5, 5137388), (10, 2568694), (20, 1284347), (109, 235660), (218, 117830), (436, 58915), (545, 47132), (1090, 23566), (2180, 11783)]