28709289

素因数分解:

$3^3\times 7^1\times {\mathrm{151901}}^1$

素因数の和:151917

約数の個数: 16

約数和(自身を含む): 48608640

約数和(自身を除く): 19899351

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 151901, 455703, 1063307, 1367109, 3189921, 4101327, 9569763, 28709289]

約数ペア:

[(1, 28709289), (3, 9569763), (7, 4101327), (9, 3189921), (21, 1367109), (27, 1063307), (63, 455703), (189, 151901)]