309987

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 20

約数和(自身を含む): 479160

約数和(自身を除く): 169173

約数列:

[1, 3, 9, 27, 43, 81, 89, 129, 267, 387, 801, 1161, 2403, 3483, 3827, 7209, 11481, 34443, 103329, 309987]

約数ペア:

[(1, 309987), (3, 103329), (9, 34443), (27, 11481), (43, 7209), (81, 3827), (89, 3483), (129, 2403), (267, 1161), (387, 801)]