321006980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{25763}}^1$

素因数の和:25868

約数の個数: 48

約数和(自身を含む): 779103360

約数和(自身を除く): 458096380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 890, 1246, 1780, 2492, 3115, 6230, 12460, 25763, 51526, 103052, 128815, 180341, 257630, 360682, 515260, 721364, 901705, 1803410, 2292907, 3606820, 4585814, 9171628, 11464535, 16050349, 22929070, 32100698, 45858140, 64201396, 80251745, 160503490, 321006980]

約数ペア:

[(1, 321006980), (2, 160503490), (4, 80251745), (5, 64201396), (7, 45858140), (10, 32100698), (14, 22929070), (20, 16050349), (28, 11464535), (35, 9171628), (70, 4585814), (89, 3606820), (140, 2292907), (178, 1803410), (356, 901705), (445, 721364), (623, 515260), (890, 360682), (1246, 257630), (1780, 180341), (2492, 128815), (3115, 103052), (6230, 51526), (12460, 25763)]