81252759

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{203641}}^1$

素因数の和:203670

約数の個数: 16

約数和(自身を含む): 130330880

約数和(自身を除く): 49078121

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 203641, 610923, 1425487, 3869179, 4276461, 11607537, 27084253, 81252759]

約数ペア:

[(1, 81252759), (3, 27084253), (7, 11607537), (19, 4276461), (21, 3869179), (57, 1425487), (133, 610923), (399, 203641)]