28651791

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71809}}^1$

素因数の和:71838

約数の個数: 16

約数和(自身を含む): 45958400

約数和(自身を除く): 17306609

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 71809, 215427, 502663, 1364371, 1507989, 4093113, 9550597, 28651791]

約数ペア:

[(1, 28651791), (3, 9550597), (7, 4093113), (19, 1507989), (21, 1364371), (57, 502663), (133, 215427), (399, 71809)]