280497

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1$

素因数の和:85

約数の個数: 24

約数和(自身を含む): 463296

約数和(自身を除く): 182799

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 361, 399, 703, 777, 1083, 2109, 2527, 4921, 7581, 13357, 14763, 40071, 93499, 280497]

約数ペア:

[(1, 280497), (3, 93499), (7, 40071), (19, 14763), (21, 13357), (37, 7581), (57, 4921), (111, 2527), (133, 2109), (259, 1083), (361, 777), (399, 703)]