206290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{421}}^1$

素因数の和:442

約数の個数: 24

約数和(自身を含む): 432972

約数和(自身を除く): 226682

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 421, 490, 842, 2105, 2947, 4210, 5894, 14735, 20629, 29470, 41258, 103145, 206290]

約数ペア:

[(1, 206290), (2, 103145), (5, 41258), (7, 29470), (10, 20629), (14, 14735), (35, 5894), (49, 4210), (70, 2947), (98, 2105), (245, 842), (421, 490)]