28195209

素因数分解:

$3^4\times 7^1\times {\mathrm{49727}}^1$

素因数の和:49746

約数の個数: 20

約数和(自身を含む): 48136704

約数和(自身を除く): 19941495

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 49727, 149181, 348089, 447543, 1044267, 1342629, 3132801, 4027887, 9398403, 28195209]

約数ペア:

[(1, 28195209), (3, 9398403), (7, 4027887), (9, 3132801), (21, 1342629), (27, 1044267), (63, 447543), (81, 348089), (189, 149181), (567, 49727)]