21032890

素因数分解:

$2^1\times 5^1\times {\mathrm{479}}^1\times {\mathrm{4391}}^1$

素因数の和:4877

約数の個数: 16

約数和(自身を含む): 37946880

約数和(自身を除く): 16913990

約数列:

[1, 2, 5, 10, 479, 958, 2395, 4391, 4790, 8782, 21955, 43910, 2103289, 4206578, 10516445, 21032890]

約数ペア:

[(1, 21032890), (2, 10516445), (5, 4206578), (10, 2103289), (479, 43910), (958, 21955), (2395, 8782), (4391, 4790)]