21005658

素因数分解:

$2^1\times 3^2\times {\mathrm{157}}^1\times {\mathrm{7433}}^1$

素因数の和:7598

約数の個数: 24

約数和(自身を含む): 45808308

約数和(自身を除く): 24802650

約数列:

[1, 2, 3, 6, 9, 18, 157, 314, 471, 942, 1413, 2826, 7433, 14866, 22299, 44598, 66897, 133794, 1166981, 2333962, 3500943, 7001886, 10502829, 21005658]

約数ペア:

[(1, 21005658), (2, 10502829), (3, 7001886), (6, 3500943), (9, 2333962), (18, 1166981), (157, 133794), (314, 66897), (471, 44598), (942, 22299), (1413, 14866), (2826, 7433)]