2012780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1307}}^1$

素因数の和:1334

約数の個数: 48

約数和(自身を含む): 5273856

約数和(自身を除く): 3261076

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, 1307, 1540, 2614, 5228, 6535, 9149, 13070, 14377, 18298, 26140, 28754, 36596, 45745, 57508, 71885, 91490, 100639, 143770, 182980, 201278, 287540, 402556, 503195, 1006390, 2012780]

約数ペア:

[(1, 2012780), (2, 1006390), (4, 503195), (5, 402556), (7, 287540), (10, 201278), (11, 182980), (14, 143770), (20, 100639), (22, 91490), (28, 71885), (35, 57508), (44, 45745), (55, 36596), (70, 28754), (77, 26140), (110, 18298), (140, 14377), (154, 13070), (220, 9149), (308, 6535), (385, 5228), (770, 2614), (1307, 1540)]