20440791

素因数分解:

$3^2\times 7^2\times {\mathrm{46351}}^1$

素因数の和:46371

約数の個数: 18

約数和(自身を含む): 34346832

約数和(自身を除く): 13906041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 46351, 139053, 324457, 417159, 973371, 2271199, 2920113, 6813597, 20440791]

約数ペア:

[(1, 20440791), (3, 6813597), (7, 2920113), (9, 2271199), (21, 973371), (49, 417159), (63, 324457), (147, 139053), (441, 46351)]