81285561

素因数分解:

$3^2\times 7^2\times {\mathrm{184321}}^1$

素因数の和:184341

約数の個数: 18

約数和(自身を含む): 136582602

約数和(自身を除く): 55297041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 184321, 552963, 1290247, 1658889, 3870741, 9031729, 11612223, 27095187, 81285561]

約数ペア:

[(1, 81285561), (3, 27095187), (7, 11612223), (9, 9031729), (21, 3870741), (49, 1658889), (63, 1290247), (147, 552963), (441, 184321)]