21511660

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{4463}}^1$

素因数の和:4713

約数の個数: 24

約数和(自身を含む): 45372096

約数和(自身を除く): 23860436

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4463, 4820, 8926, 17852, 22315, 44630, 89260, 1075583, 2151166, 4302332, 5377915, 10755830, 21511660]

約数ペア:

[(1, 21511660), (2, 10755830), (4, 5377915), (5, 4302332), (10, 2151166), (20, 1075583), (241, 89260), (482, 44630), (964, 22315), (1205, 17852), (2410, 8926), (4463, 4820)]