990215618

素因数分解:

$2^1\times 7^4\times {\mathrm{206209}}^1$

素因数の和:206239

約数の個数: 20

約数和(自身を含む): 1732782630

約数和(自身を除く): 742567012

約数列:

[1, 2, 7, 14, 49, 98, 343, 686, 2401, 4802, 206209, 412418, 1443463, 2886926, 10104241, 20208482, 70729687, 141459374, 495107809, 990215618]

約数ペア:

[(1, 990215618), (2, 495107809), (7, 141459374), (14, 70729687), (49, 20208482), (98, 10104241), (343, 2886926), (686, 1443463), (2401, 412418), (4802, 206209)]