20799272

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4651}}^1$

素因数の和:4713

約数の個数: 32

約数和(自身を含む): 42984480

約数和(自身を除く): 22185208

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4472, 4651, 9302, 18604, 37208, 60463, 120926, 199993, 241852, 399986, 483704, 799972, 1599944, 2599909, 5199818, 10399636, 20799272]

約数ペア:

[(1, 20799272), (2, 10399636), (4, 5199818), (8, 2599909), (13, 1599944), (26, 799972), (43, 483704), (52, 399986), (86, 241852), (104, 199993), (172, 120926), (344, 60463), (559, 37208), (1118, 18604), (2236, 9302), (4472, 4651)]