28297479

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{70921}}^1$

素因数の和:70950

約数の個数: 16

約数和(自身を含む): 45390080

約数和(自身を除く): 17092601

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 70921, 212763, 496447, 1347499, 1489341, 4042497, 9432493, 28297479]

約数ペア:

[(1, 28297479), (3, 9432493), (7, 4042497), (19, 1489341), (21, 1347499), (57, 496447), (133, 212763), (399, 70921)]