21818241

素因数分解:

$3^6\times {\mathrm{173}}^2$

素因数の和:364

約数の個数: 21

約数和(自身を含む): 32902579

約数和(自身を除く): 11084338

約数列:

[1, 3, 9, 27, 81, 173, 243, 519, 729, 1557, 4671, 14013, 29929, 42039, 89787, 126117, 269361, 808083, 2424249, 7272747, 21818241]

約数ペア:

[(1, 21818241), (3, 7272747), (9, 2424249), (27, 808083), (81, 269361), (173, 126117), (243, 89787), (519, 42039), (729, 29929), (1557, 14013)]