21982216

素因数分解:

$2^3\times {\mathrm{661}}^1\times {\mathrm{4157}}^1$

素因数の和:4824

約数の個数: 16

約数和(自身を含む): 41288940

約数和(自身を除く): 19306724

約数列:

[1, 2, 4, 8, 661, 1322, 2644, 4157, 5288, 8314, 16628, 33256, 2747777, 5495554, 10991108, 21982216]

約数ペア:

[(1, 21982216), (2, 10991108), (4, 5495554), (8, 2747777), (661, 33256), (1322, 16628), (2644, 8314), (4157, 5288)]