20798456

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5231}}^1$

素因数の和:5315

約数の個数: 32

約数和(自身を含む): 45204480

約数和(自身を除く): 24406024

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 5231, 10462, 20924, 36617, 41848, 73234, 146468, 292936, 371401, 742802, 1485604, 2599807, 2971208, 5199614, 10399228, 20798456]

約数ペア:

[(1, 20798456), (2, 10399228), (4, 5199614), (7, 2971208), (8, 2599807), (14, 1485604), (28, 742802), (56, 371401), (71, 292936), (142, 146468), (284, 73234), (497, 41848), (568, 36617), (994, 20924), (1988, 10462), (3976, 5231)]