21012128

素因数分解:

$2^5\times {\mathrm{269}}^1\times {\mathrm{2441}}^1$

素因数の和:2720

約数の個数: 24

約数和(自身を含む): 41538420

約数和(自身を除く): 20526292

約数列:

[1, 2, 4, 8, 16, 32, 269, 538, 1076, 2152, 2441, 4304, 4882, 8608, 9764, 19528, 39056, 78112, 656629, 1313258, 2626516, 5253032, 10506064, 21012128]

約数ペア:

[(1, 21012128), (2, 10506064), (4, 5253032), (8, 2626516), (16, 1313258), (32, 656629), (269, 78112), (538, 39056), (1076, 19528), (2152, 9764), (2441, 8608), (4304, 4882)]