21493689

素因数分解:

$3^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{2851}}^1$

素因数の和:3220

約数の個数: 16

約数和(自身を含む): 32855040

約数和(自身を除く): 11361351

約数列:

[1, 3, 7, 21, 359, 1077, 2513, 2851, 7539, 8553, 19957, 59871, 1023509, 3070527, 7164563, 21493689]

約数ペア:

[(1, 21493689), (3, 7164563), (7, 3070527), (21, 1023509), (359, 59871), (1077, 19957), (2513, 8553), (2851, 7539)]