28240569

素因数分解:

$3^4\times 7^1\times {\mathrm{49807}}^1$

素因数の和:49826

約数の個数: 20

約数和(自身を含む): 48214144

約数和(自身を除く): 19973575

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 49807, 149421, 348649, 448263, 1045947, 1344789, 3137841, 4034367, 9413523, 28240569]

約数ペア:

[(1, 28240569), (3, 9413523), (7, 4034367), (9, 3137841), (21, 1344789), (27, 1045947), (63, 448263), (81, 348649), (189, 149421), (567, 49807)]