128137891

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{773}}^1$

素因数の和:1003

約数の個数: 24

約数和(自身を含む): 158824800

約数和(自身を除く): 30686909

約数列:

[1, 7, 17, 49, 119, 199, 773, 833, 1393, 3383, 5411, 9751, 13141, 23681, 37877, 91987, 153827, 165767, 643909, 1076789, 2615059, 7537523, 18305413, 128137891]

約数ペア:

[(1, 128137891), (7, 18305413), (17, 7537523), (49, 2615059), (119, 1076789), (199, 643909), (773, 165767), (833, 153827), (1393, 91987), (3383, 37877), (5411, 23681), (9751, 13141)]