21124144

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42589}}^1$

素因数の和:42628

約数の個数: 20

約数和(自身を含む): 42249280

約数和(自身を除く): 21125136

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42589, 85178, 170356, 340712, 681424, 1320259, 2640518, 5281036, 10562072, 21124144]

約数ペア:

[(1, 21124144), (2, 10562072), (4, 5281036), (8, 2640518), (16, 1320259), (31, 681424), (62, 340712), (124, 170356), (248, 85178), (496, 42589)]