28305207

素因数分解:

$3^4\times 7^1\times {\mathrm{49921}}^1$

素因数の和:49940

約数の個数: 20

約数和(自身を含む): 48324496

約数和(自身を除く): 20019289

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 49921, 149763, 349447, 449289, 1048341, 1347867, 3145023, 4043601, 9435069, 28305207]

約数ペア:

[(1, 28305207), (3, 9435069), (7, 4043601), (9, 3145023), (21, 1347867), (27, 1048341), (63, 449289), (81, 349447), (189, 149763), (567, 49921)]