21452690

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43781}}^1$

素因数の和:43802

約数の個数: 24

約数和(自身を含む): 44920332

約数和(自身を除く): 23467642

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43781, 87562, 218905, 306467, 437810, 612934, 1532335, 2145269, 3064670, 4290538, 10726345, 21452690]

約数ペア:

[(1, 21452690), (2, 10726345), (5, 4290538), (7, 3064670), (10, 2145269), (14, 1532335), (35, 612934), (49, 437810), (70, 306467), (98, 218905), (245, 87562), (490, 43781)]