16564401

素因数分解:

$3^2\times 7^2\times {\mathrm{37561}}^1$

素因数の和:37581

約数の個数: 18

約数和(自身を含む): 27833442

約数和(自身を除く): 11269041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 37561, 112683, 262927, 338049, 788781, 1840489, 2366343, 5521467, 16564401]

約数ペア:

[(1, 16564401), (3, 5521467), (7, 2366343), (9, 1840489), (21, 788781), (49, 338049), (63, 262927), (147, 112683), (441, 37561)]