21425.000000

素因数分解:

$2^4\times 7^1\times {\mathrm{3491}}^1$

素因数の和:3506

約数の個数: 20

約数和(自身を含む): 866016

約数和(自身を除く): 475024

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 3491, 6982, 13964, 24437, 27928, 48874, 55856, 97748, 195496, 390992]

約数ペア:

[(1, 390992), (2, 195496), (4, 97748), (7, 55856), (8, 48874), (14, 27928), (16, 24437), (28, 13964), (56, 6982), (112, 3491)]