21938721

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8779}}^1$

素因数の和:8813

約数の個数: 24

約数和(自身を含む): 36033120

約数和(自身を除く): 14094399

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8779, 26337, 61453, 149243, 184359, 430171, 447729, 1044701, 1290513, 3134103, 7312907, 21938721]

約数ペア:

[(1, 21938721), (3, 7312907), (7, 3134103), (17, 1290513), (21, 1044701), (49, 447729), (51, 430171), (119, 184359), (147, 149243), (357, 61453), (833, 26337), (2499, 8779)]