681500385

素因数分解:

$3^4\times 5^1\times {\mathrm{1682717}}^1$

素因数の和:1682734

約数の個数: 20

約数和(自身を含む): 1221653268

約数和(自身を除く): 540152883

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 1682717, 5048151, 8413585, 15144453, 25240755, 45433359, 75722265, 136300077, 227166795, 681500385]

約数ペア:

[(1, 681500385), (3, 227166795), (5, 136300077), (9, 75722265), (15, 45433359), (27, 25240755), (45, 15144453), (81, 8413585), (135, 5048151), (405, 1682717)]