21278096

素因数分解:

$2^4\times 7^1\times {\mathrm{189983}}^1$

素因数の和:189998

約数の個数: 20

約数和(自身を含む): 47116032

約数和(自身を除く): 25837936

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 189983, 379966, 759932, 1329881, 1519864, 2659762, 3039728, 5319524, 10639048, 21278096]

約数ペア:

[(1, 21278096), (2, 10639048), (4, 5319524), (7, 3039728), (8, 2659762), (14, 1519864), (16, 1329881), (28, 759932), (56, 379966), (112, 189983)]