28289499

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{70901}}^1$

素因数の和:70930

約数の個数: 16

約数和(自身を含む): 45377280

約数和(自身を除く): 17087781

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 70901, 212703, 496307, 1347119, 1488921, 4041357, 9429833, 28289499]

約数ペア:

[(1, 28289499), (3, 9429833), (7, 4041357), (19, 1488921), (21, 1347119), (57, 496307), (133, 212703), (399, 70901)]