668920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{2389}}^1$

素因数の和:2407

約数の個数: 32

約数和(自身を含む): 1720800

約数和(自身を除く): 1051880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 2389, 4778, 9556, 11945, 16723, 19112, 23890, 33446, 47780, 66892, 83615, 95560, 133784, 167230, 334460, 668920]

約数ペア:

[(1, 668920), (2, 334460), (4, 167230), (5, 133784), (7, 95560), (8, 83615), (10, 66892), (14, 47780), (20, 33446), (28, 23890), (35, 19112), (40, 16723), (56, 11945), (70, 9556), (140, 4778), (280, 2389)]