21800884

素因数分解:

$2^2\times 7^2\times {\mathrm{111229}}^1$

素因数の和:111247

約数の個数: 18

約数和(自身を含む): 44380770

約数和(自身を除く): 22579886

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 111229, 222458, 444916, 778603, 1557206, 3114412, 5450221, 10900442, 21800884]

約数ペア:

[(1, 21800884), (2, 10900442), (4, 5450221), (7, 3114412), (14, 1557206), (28, 778603), (49, 444916), (98, 222458), (196, 111229)]