20519307

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{179}}^1\times {\mathrm{271}}^1$

素因数の和:503

約数の個数: 24

約数和(自身を含む): 30551040

約数和(自身を除く): 10031733

約数列:

[1, 3, 9, 47, 141, 179, 271, 423, 537, 813, 1611, 2439, 8413, 12737, 25239, 38211, 48509, 75717, 114633, 145527, 436581, 2279923, 6839769, 20519307]

約数ペア:

[(1, 20519307), (3, 6839769), (9, 2279923), (47, 436581), (141, 145527), (179, 114633), (271, 75717), (423, 48509), (537, 38211), (813, 25239), (1611, 12737), (2439, 8413)]