21253988

素因数分解:

$2^2\times 7^1\times {\mathrm{271}}^1\times {\mathrm{2801}}^1$

素因数の和:3083

約数の個数: 24

約数和(自身を含む): 42680064

約数和(自身を除く): 21426076

約数列:

[1, 2, 4, 7, 14, 28, 271, 542, 1084, 1897, 2801, 3794, 5602, 7588, 11204, 19607, 39214, 78428, 759071, 1518142, 3036284, 5313497, 10626994, 21253988]

約数ペア:

[(1, 21253988), (2, 10626994), (4, 5313497), (7, 3036284), (14, 1518142), (28, 759071), (271, 78428), (542, 39214), (1084, 19607), (1897, 11204), (2801, 7588), (3794, 5602)]