81720252

素因数分解:

$2^2\times 3^4\times {\mathrm{252223}}^1$

素因数の和:252239

約数の個数: 30

約数和(自身を含む): 213633728

約数和(自身を除く): 131913476

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 324, 252223, 504446, 756669, 1008892, 1513338, 2270007, 3026676, 4540014, 6810021, 9080028, 13620042, 20430063, 27240084, 40860126, 81720252]

約数ペア:

[(1, 81720252), (2, 40860126), (3, 27240084), (4, 20430063), (6, 13620042), (9, 9080028), (12, 6810021), (18, 4540014), (27, 3026676), (36, 2270007), (54, 1513338), (81, 1008892), (108, 756669), (162, 504446), (324, 252223)]