21281152

素因数分解:

$2^7\times {\mathrm{166259}}^1$

素因数の和:166273

約数の個数: 16

約数和(自身を含む): 42396300

約数和(自身を除く): 21115148

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 166259, 332518, 665036, 1330072, 2660144, 5320288, 10640576, 21281152]

約数ペア:

[(1, 21281152), (2, 10640576), (4, 5320288), (8, 2660144), (16, 1330072), (32, 665036), (64, 332518), (128, 166259)]