20661568

素因数分解:

$2^6\times {\mathrm{71}}^1\times {\mathrm{4547}}^1$

素因数の和:4630

約数の個数: 28

約数和(自身を含む): 41586912

約数和(自身を除く): 20925344

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 142, 284, 568, 1136, 2272, 4544, 4547, 9094, 18188, 36376, 72752, 145504, 291008, 322837, 645674, 1291348, 2582696, 5165392, 10330784, 20661568]

約数ペア:

[(1, 20661568), (2, 10330784), (4, 5165392), (8, 2582696), (16, 1291348), (32, 645674), (64, 322837), (71, 291008), (142, 145504), (284, 72752), (568, 36376), (1136, 18188), (2272, 9094), (4544, 4547)]