19875465

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{25981}}^1$

素因数の和:26009

約数の個数: 24

約数和(自身を含む): 36478728

約数和(自身を除く): 16603263

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 25981, 77943, 129905, 233829, 389715, 441677, 1169145, 1325031, 2208385, 3975093, 6625155, 19875465]

約数ペア:

[(1, 19875465), (3, 6625155), (5, 3975093), (9, 2208385), (15, 1325031), (17, 1169145), (45, 441677), (51, 389715), (85, 233829), (153, 129905), (255, 77943), (765, 25981)]