20421968

素因数分解:

$2^4\times 7^1\times {\mathrm{182339}}^1$

素因数の和:182354

約数の個数: 20

約数和(自身を含む): 45220320

約数和(自身を除く): 24798352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 182339, 364678, 729356, 1276373, 1458712, 2552746, 2917424, 5105492, 10210984, 20421968]

約数ペア:

[(1, 20421968), (2, 10210984), (4, 5105492), (7, 2917424), (8, 2552746), (14, 1458712), (16, 1276373), (28, 729356), (56, 364678), (112, 182339)]