21241556

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{16141}}^1$

素因数の和:16199

約数の個数: 24

約数和(自身を含む): 43389696

約数和(自身を除く): 22148140

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 16141, 32282, 64564, 112987, 225974, 451948, 758627, 1517254, 3034508, 5310389, 10620778, 21241556]

約数ペア:

[(1, 21241556), (2, 10620778), (4, 5310389), (7, 3034508), (14, 1517254), (28, 758627), (47, 451948), (94, 225974), (188, 112987), (329, 64564), (658, 32282), (1316, 16141)]