21423290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43721}}^1$

素因数の和:43742

約数の個数: 24

約数和(自身を含む): 44858772

約数和(自身を除く): 23435482

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43721, 87442, 218605, 306047, 437210, 612094, 1530235, 2142329, 3060470, 4284658, 10711645, 21423290]

約数ペア:

[(1, 21423290), (2, 10711645), (5, 4284658), (7, 3060470), (10, 2142329), (14, 1530235), (35, 612094), (49, 437210), (70, 306047), (98, 218605), (245, 87442), (490, 43721)]