1663120

素因数分解:

$2^4\times 5^1\times {\mathrm{20789}}^1$

素因数の和:20802

約数の個数: 20

約数和(自身を含む): 3866940

約数和(自身を除く): 2203820

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20789, 41578, 83156, 103945, 166312, 207890, 332624, 415780, 831560, 1663120]

約数ペア:

[(1, 1663120), (2, 831560), (4, 415780), (5, 332624), (8, 207890), (10, 166312), (16, 103945), (20, 83156), (40, 41578), (80, 20789)]