20997824

素因数分解:

$2^6\times {\mathrm{71}}^1\times {\mathrm{4621}}^1$

素因数の和:4704

約数の個数: 28

約数和(自身を含む): 42263568

約数和(自身を除く): 21265744

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 142, 284, 568, 1136, 2272, 4544, 4621, 9242, 18484, 36968, 73936, 147872, 295744, 328091, 656182, 1312364, 2624728, 5249456, 10498912, 20997824]

約数ペア:

[(1, 20997824), (2, 10498912), (4, 5249456), (8, 2624728), (16, 1312364), (32, 656182), (64, 328091), (71, 295744), (142, 147872), (284, 73936), (568, 36968), (1136, 18484), (2272, 9242), (4544, 4621)]