387891

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:191

約数の個数: 24

約数和(自身を含む): 658944

約数和(自身を除く): 271053

約数列:

[1, 3, 7, 9, 21, 47, 63, 131, 141, 329, 393, 423, 917, 987, 1179, 2751, 2961, 6157, 8253, 18471, 43099, 55413, 129297, 387891]

約数ペア:

[(1, 387891), (3, 129297), (7, 55413), (9, 43099), (21, 18471), (47, 8253), (63, 6157), (131, 2961), (141, 2751), (329, 1179), (393, 987), (423, 917)]