21922551

素因数分解:

$3^2\times 7^2\times {\mathrm{49711}}^1$

素因数の和:49731

約数の個数: 18

約数和(自身を含む): 36836592

約数和(自身を除く): 14914041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 49711, 149133, 347977, 447399, 1043931, 2435839, 3131793, 7307517, 21922551]

約数ペア:

[(1, 21922551), (3, 7307517), (7, 3131793), (9, 2435839), (21, 1043931), (49, 447399), (63, 347977), (147, 149133), (441, 49711)]