21428084

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{383}}^1$

素因数の和:655

約数の個数: 24

約数和(自身を含む): 38320128

約数和(自身を除く): 16892044

約数列:

[1, 2, 4, 71, 142, 197, 284, 383, 394, 766, 788, 1532, 13987, 27193, 27974, 54386, 55948, 75451, 108772, 150902, 301804, 5357021, 10714042, 21428084]

約数ペア:

[(1, 21428084), (2, 10714042), (4, 5357021), (71, 301804), (142, 150902), (197, 108772), (284, 75451), (383, 55948), (394, 54386), (766, 27974), (788, 27193), (1532, 13987)]