80290460

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1049}}^1$

素因数の和:1190

約数の個数: 48

約数和(自身を含む): 174636000

約数和(自身を除く): 94345540

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 215, 356, 430, 445, 860, 890, 1049, 1780, 2098, 3827, 4196, 5245, 7654, 10490, 15308, 19135, 20980, 38270, 45107, 76540, 90214, 93361, 180428, 186722, 225535, 373444, 451070, 466805, 902140, 933610, 1867220, 4014523, 8029046, 16058092, 20072615, 40145230, 80290460]

約数ペア:

[(1, 80290460), (2, 40145230), (4, 20072615), (5, 16058092), (10, 8029046), (20, 4014523), (43, 1867220), (86, 933610), (89, 902140), (172, 466805), (178, 451070), (215, 373444), (356, 225535), (430, 186722), (445, 180428), (860, 93361), (890, 90214), (1049, 76540), (1780, 45107), (2098, 38270), (3827, 20980), (4196, 19135), (5245, 15308), (7654, 10490)]