81215043

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{571}}^1$

素因数の和:1115

約数の個数: 32

約数和(自身を含む): 133765632

約数和(自身を除く): 52550589

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 521, 571, 1563, 1713, 3647, 3997, 6773, 7423, 10941, 11991, 20319, 22269, 47411, 51961, 142233, 155883, 297491, 892473, 2082437, 3867383, 6247311, 11602149, 27071681, 81215043]

約数ペア:

[(1, 81215043), (3, 27071681), (7, 11602149), (13, 6247311), (21, 3867383), (39, 2082437), (91, 892473), (273, 297491), (521, 155883), (571, 142233), (1563, 51961), (1713, 47411), (3647, 22269), (3997, 20319), (6773, 11991), (7423, 10941)]