18868857

素因数分解:

$3^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{4561}}^1$

素因数の和:4768

約数の個数: 16

約数和(自身を含む): 28904832

約数和(自身を除く): 10035975

約数列:

[1, 3, 7, 21, 197, 591, 1379, 4137, 4561, 13683, 31927, 95781, 898517, 2695551, 6289619, 18868857]

約数ペア:

[(1, 18868857), (3, 6289619), (7, 2695551), (21, 898517), (197, 95781), (591, 31927), (1379, 13683), (4137, 4561)]