28672539

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71861}}^1$

素因数の和:71890

約数の個数: 16

約数和(自身を含む): 45991680

約数和(自身を除く): 17319141

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 71861, 215583, 503027, 1365359, 1509081, 4096077, 9557513, 28672539]

約数ペア:

[(1, 28672539), (3, 9557513), (7, 4096077), (19, 1509081), (21, 1365359), (57, 503027), (133, 215583), (399, 71861)]