21245956

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{1223}}^1$

素因数の和:1371

約数の個数: 24

約数和(自身を含む): 38453184

約数和(自身を除く): 17207228

約数列:

[1, 2, 4, 43, 86, 101, 172, 202, 404, 1223, 2446, 4343, 4892, 8686, 17372, 52589, 105178, 123523, 210356, 247046, 494092, 5311489, 10622978, 21245956]

約数ペア:

[(1, 21245956), (2, 10622978), (4, 5311489), (43, 494092), (86, 247046), (101, 210356), (172, 123523), (202, 105178), (404, 52589), (1223, 17372), (2446, 8686), (4343, 4892)]