81350199

素因数分解:

$3^2\times 7^1\times {\mathrm{991}}^1\times {\mathrm{1303}}^1$

素因数の和:2307

約数の個数: 24

約数和(自身を含む): 134531072

約数和(自身を除く): 53180873

約数列:

[1, 3, 7, 9, 21, 63, 991, 1303, 2973, 3909, 6937, 8919, 9121, 11727, 20811, 27363, 62433, 82089, 1291273, 3873819, 9038911, 11621457, 27116733, 81350199]

約数ペア:

[(1, 81350199), (3, 27116733), (7, 11621457), (9, 9038911), (21, 3873819), (63, 1291273), (991, 82089), (1303, 62433), (2973, 27363), (3909, 20811), (6937, 11727), (8919, 9121)]