21181312

素因数分解:

$2^7\times {\mathrm{165479}}^1$

素因数の和:165493

約数の個数: 16

約数和(自身を含む): 42197400

約数和(自身を除く): 21016088

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 165479, 330958, 661916, 1323832, 2647664, 5295328, 10590656, 21181312]

約数ペア:

[(1, 21181312), (2, 10590656), (4, 5295328), (8, 2647664), (16, 1323832), (32, 661916), (64, 330958), (128, 165479)]