20806408

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5233}}^1$

素因数の和:5317

約数の個数: 32

約数和(自身を含む): 45221760

約数和(自身を除く): 24415352

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 5233, 10466, 20932, 36631, 41864, 73262, 146524, 293048, 371543, 743086, 1486172, 2600801, 2972344, 5201602, 10403204, 20806408]

約数ペア:

[(1, 20806408), (2, 10403204), (4, 5201602), (7, 2972344), (8, 2600801), (14, 1486172), (28, 743086), (56, 371543), (71, 293048), (142, 146524), (284, 73262), (497, 41864), (568, 36631), (994, 20932), (1988, 10466), (3976, 5233)]