28747251

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{81901}}^1$

素因数の和:81923

約数の個数: 16

約数和(自身を含む): 45865120

約数和(自身を除く): 17117869

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 81901, 245703, 737109, 1064713, 2211327, 3194139, 9582417, 28747251]

約数ペア:

[(1, 28747251), (3, 9582417), (9, 3194139), (13, 2211327), (27, 1064713), (39, 737109), (117, 245703), (351, 81901)]