389781

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{269}}^1$

素因数の和:305

約数の個数: 24

約数和(自身を含む): 673920

約数和(自身を除く): 284139

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 269, 483, 807, 1449, 1883, 2421, 5649, 6187, 16947, 18561, 43309, 55683, 129927, 389781]

約数ペア:

[(1, 389781), (3, 129927), (7, 55683), (9, 43309), (21, 18561), (23, 16947), (63, 6187), (69, 5649), (161, 2421), (207, 1883), (269, 1449), (483, 807)]