279993

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:276

約数の個数: 16

約数和(自身を含む): 435200

約数和(自身を除く): 155207

約数列:

[1, 3, 7, 21, 67, 199, 201, 469, 597, 1393, 1407, 4179, 13333, 39999, 93331, 279993]

約数ペア:

[(1, 279993), (3, 93331), (7, 39999), (21, 13333), (67, 4179), (199, 1407), (201, 1393), (469, 597)]