28285509

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{70891}}^1$

素因数の和:70920

約数の個数: 16

約数和(自身を含む): 45370880

約数和(自身を除く): 17085371

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 70891, 212673, 496237, 1346929, 1488711, 4040787, 9428503, 28285509]

約数ペア:

[(1, 28285509), (3, 9428503), (7, 4040787), (19, 1488711), (21, 1346929), (57, 496237), (133, 212673), (399, 70891)]