28128087

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{631}}^1$

素因数の和:780

約数の個数: 32

約数和(自身を含む): 45301760

約数和(自身を除く): 17173673

約数列:

[1, 3, 9, 13, 27, 39, 117, 127, 351, 381, 631, 1143, 1651, 1893, 3429, 4953, 5679, 8203, 14859, 17037, 24609, 44577, 73827, 80137, 221481, 240411, 721233, 1041781, 2163699, 3125343, 9376029, 28128087]

約数ペア:

[(1, 28128087), (3, 9376029), (9, 3125343), (13, 2163699), (27, 1041781), (39, 721233), (117, 240411), (127, 221481), (351, 80137), (381, 73827), (631, 44577), (1143, 24609), (1651, 17037), (1893, 14859), (3429, 8203), (4953, 5679)]