20802940

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{9721}}^1$

素因数の和:9837

約数の個数: 24

約数和(自身を含む): 44098992

約数和(自身を除く): 23296052

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 428, 535, 1070, 2140, 9721, 19442, 38884, 48605, 97210, 194420, 1040147, 2080294, 4160588, 5200735, 10401470, 20802940]

約数ペア:

[(1, 20802940), (2, 10401470), (4, 5200735), (5, 4160588), (10, 2080294), (20, 1040147), (107, 194420), (214, 97210), (428, 48605), (535, 38884), (1070, 19442), (2140, 9721)]