81723208

素因数分解:

$2^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{19991}}^1$

素因数の和:20077

約数の個数: 32

約数和(自身を含む): 177528960

約数和(自身を除く): 95805752

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 73, 146, 292, 511, 584, 1022, 2044, 4088, 19991, 39982, 79964, 139937, 159928, 279874, 559748, 1119496, 1459343, 2918686, 5837372, 10215401, 11674744, 20430802, 40861604, 81723208]

約数ペア:

[(1, 81723208), (2, 40861604), (4, 20430802), (7, 11674744), (8, 10215401), (14, 5837372), (28, 2918686), (56, 1459343), (73, 1119496), (146, 559748), (292, 279874), (511, 159928), (584, 139937), (1022, 79964), (2044, 39982), (4088, 19991)]