28920339

素因数分解:

$3^2\times 7^2\times {\mathrm{65579}}^1$

素因数の和:65599

約数の個数: 18

約数和(自身を含む): 48594780

約数和(自身を除く): 19674441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 65579, 196737, 459053, 590211, 1377159, 3213371, 4131477, 9640113, 28920339]

約数ペア:

[(1, 28920339), (3, 9640113), (7, 4131477), (9, 3213371), (21, 1377159), (49, 590211), (63, 459053), (147, 196737), (441, 65579)]