28208787

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{21517}}^1$

素因数の和:21562

約数の個数: 16

約数和(自身を含む): 41314560

約数和(自身を除く): 13105773

約数列:

[1, 3, 19, 23, 57, 69, 437, 1311, 21517, 64551, 408823, 494891, 1226469, 1484673, 9402929, 28208787]

約数ペア:

[(1, 28208787), (3, 9402929), (19, 1484673), (23, 1226469), (57, 494891), (69, 408823), (437, 64551), (1311, 21517)]