215544973

素因数分解:

$7^4\times {\mathrm{107}}^1\times {\mathrm{839}}^1$

素因数の和:974

約数の個数: 20

約数和(自身を含む): 254106720

約数和(自身を除く): 38561747

約数列:

[1, 7, 49, 107, 343, 749, 839, 2401, 5243, 5873, 36701, 41111, 89773, 256907, 287777, 628411, 2014439, 4398877, 30792139, 215544973]

約数ペア:

[(1, 215544973), (7, 30792139), (49, 4398877), (107, 2014439), (343, 628411), (749, 287777), (839, 256907), (2401, 89773), (5243, 41111), (5873, 36701)]