31218940

素因数分解:

$2^2\times 5^1\times {\mathrm{907}}^1\times {\mathrm{1721}}^1$

素因数の和:2637

約数の個数: 24

約数和(自身を含む): 65670192

約数和(自身を除く): 34451252

約数列:

[1, 2, 4, 5, 10, 20, 907, 1721, 1814, 3442, 3628, 4535, 6884, 8605, 9070, 17210, 18140, 34420, 1560947, 3121894, 6243788, 7804735, 15609470, 31218940]

約数ペア:

[(1, 31218940), (2, 15609470), (4, 7804735), (5, 6243788), (10, 3121894), (20, 1560947), (907, 34420), (1721, 18140), (1814, 17210), (3442, 9070), (3628, 8605), (4535, 6884)]