1978025

素因数分解:

$5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:233

約数の個数: 24

約数和(自身を含む): 2856960

約数和(自身を除く): 878935

約数列:

[1, 5, 7, 25, 35, 89, 127, 175, 445, 623, 635, 889, 2225, 3115, 3175, 4445, 11303, 15575, 22225, 56515, 79121, 282575, 395605, 1978025]

約数ペア:

[(1, 1978025), (5, 395605), (7, 282575), (25, 79121), (35, 56515), (89, 22225), (127, 15575), (175, 11303), (445, 4445), (623, 3175), (635, 3115), (889, 2225)]