21681976

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{63029}}^1$

素因数の和:63078

約数の個数: 16

約数和(自身を含む): 41599800

約数和(自身を除く): 19917824

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 63029, 126058, 252116, 504232, 2710247, 5420494, 10840988, 21681976]

約数ペア:

[(1, 21681976), (2, 10840988), (4, 5420494), (8, 2710247), (43, 504232), (86, 252116), (172, 126058), (344, 63029)]