290920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1039}}^1$

素因数の和:1057

約数の個数: 32

約数和(自身を含む): 748800

約数和(自身を除く): 457880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1039, 2078, 4156, 5195, 7273, 8312, 10390, 14546, 20780, 29092, 36365, 41560, 58184, 72730, 145460, 290920]

約数ペア:

[(1, 290920), (2, 145460), (4, 72730), (5, 58184), (7, 41560), (8, 36365), (10, 29092), (14, 20780), (20, 14546), (28, 10390), (35, 8312), (40, 7273), (56, 5195), (70, 4156), (140, 2078), (280, 1039)]