81765943

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:435

約数の個数: 24

約数和(自身を含む): 99380736

約数和(自身を除く): 17614793

約数列:

[1, 7, 23, 71, 161, 311, 497, 529, 1633, 2177, 3703, 7153, 11431, 22081, 37559, 50071, 154567, 164519, 262913, 507863, 1151633, 3555041, 11680849, 81765943]

約数ペア:

[(1, 81765943), (7, 11680849), (23, 3555041), (71, 1151633), (161, 507863), (311, 262913), (497, 164519), (529, 154567), (1633, 50071), (2177, 37559), (3703, 22081), (7153, 11431)]