2520980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1637}}^1$

素因数の和:1664

約数の個数: 48

約数和(自身を含む): 6604416

約数和(自身を除く): 4083436

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 1637, 3274, 6548, 8185, 11459, 16370, 18007, 22918, 32740, 36014, 45836, 57295, 72028, 90035, 114590, 126049, 180070, 229180, 252098, 360140, 504196, 630245, 1260490, 2520980]

約数ペア:

[(1, 2520980), (2, 1260490), (4, 630245), (5, 504196), (7, 360140), (10, 252098), (11, 229180), (14, 180070), (20, 126049), (22, 114590), (28, 90035), (35, 72028), (44, 57295), (55, 45836), (70, 36014), (77, 32740), (110, 22918), (140, 18007), (154, 16370), (220, 11459), (308, 8185), (385, 6548), (770, 3274), (1540, 1637)]