21048884

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{419}}^1\times {\mathrm{661}}^1$

素因数の和:1103

約数の個数: 24

約数和(自身を含む): 38925600

約数和(自身を除く): 17876716

約数列:

[1, 2, 4, 19, 38, 76, 419, 661, 838, 1322, 1676, 2644, 7961, 12559, 15922, 25118, 31844, 50236, 276959, 553918, 1107836, 5262221, 10524442, 21048884]

約数ペア:

[(1, 21048884), (2, 10524442), (4, 5262221), (19, 1107836), (38, 553918), (76, 276959), (419, 50236), (661, 31844), (838, 25118), (1322, 15922), (1676, 12559), (2644, 7961)]