91211991

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^2\times {\mathrm{521}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 133210224

約数和(自身を除く): 41998233

約数列:

[1, 3, 13, 39, 67, 201, 521, 871, 1563, 2613, 4489, 6773, 13467, 20319, 34907, 58357, 104721, 175071, 453791, 1361373, 2338769, 7016307, 30403997, 91211991]

約数ペア:

[(1, 91211991), (3, 30403997), (13, 7016307), (39, 2338769), (67, 1361373), (201, 453791), (521, 175071), (871, 104721), (1563, 58357), (2613, 34907), (4489, 20319), (6773, 13467)]