81208827

素因数分解:

$3^2\times 7^2\times {\mathrm{107}}^1\times {\mathrm{1721}}^1$

素因数の和:1848

約数の個数: 36

約数和(自身を含む): 137808216

約数和(自身を除く): 56599389

約数列:

[1, 3, 7, 9, 21, 49, 63, 107, 147, 321, 441, 749, 963, 1721, 2247, 5163, 5243, 6741, 12047, 15489, 15729, 36141, 47187, 84329, 108423, 184147, 252987, 552441, 758961, 1289029, 1657323, 3867087, 9023203, 11601261, 27069609, 81208827]

約数ペア:

[(1, 81208827), (3, 27069609), (7, 11601261), (9, 9023203), (21, 3867087), (49, 1657323), (63, 1289029), (107, 758961), (147, 552441), (321, 252987), (441, 184147), (749, 108423), (963, 84329), (1721, 47187), (2247, 36141), (5163, 15729), (5243, 15489), (6741, 12047)]