21089404

素因数分解:

$2^2\times 7^2\times {\mathrm{107599}}^1$

素因数の和:107617

約数の個数: 18

約数和(自身を含む): 42932400

約数和(自身を除く): 21842996

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 107599, 215198, 430396, 753193, 1506386, 3012772, 5272351, 10544702, 21089404]

約数ペア:

[(1, 21089404), (2, 10544702), (4, 5272351), (7, 3012772), (14, 1506386), (28, 753193), (49, 430396), (98, 215198), (196, 107599)]