1321880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{4721}}^1$

素因数の和:4739

約数の個数: 32

約数和(自身を含む): 3399840

約数和(自身を除く): 2077960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 4721, 9442, 18884, 23605, 33047, 37768, 47210, 66094, 94420, 132188, 165235, 188840, 264376, 330470, 660940, 1321880]

約数ペア:

[(1, 1321880), (2, 660940), (4, 330470), (5, 264376), (7, 188840), (8, 165235), (10, 132188), (14, 94420), (20, 66094), (28, 47210), (35, 37768), (40, 33047), (56, 23605), (70, 18884), (140, 9442), (280, 4721)]