80027860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2617}}^1$

素因数の和:2776

約数の個数: 48

約数和(自身を含む): 184726080

約数和(自身を除く): 104698220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 139, 220, 278, 556, 695, 1390, 1529, 2617, 2780, 3058, 5234, 6116, 7645, 10468, 13085, 15290, 26170, 28787, 30580, 52340, 57574, 115148, 143935, 287870, 363763, 575740, 727526, 1455052, 1818815, 3637630, 4001393, 7275260, 8002786, 16005572, 20006965, 40013930, 80027860]

約数ペア:

[(1, 80027860), (2, 40013930), (4, 20006965), (5, 16005572), (10, 8002786), (11, 7275260), (20, 4001393), (22, 3637630), (44, 1818815), (55, 1455052), (110, 727526), (139, 575740), (220, 363763), (278, 287870), (556, 143935), (695, 115148), (1390, 57574), (1529, 52340), (2617, 30580), (2780, 28787), (3058, 26170), (5234, 15290), (6116, 13085), (7645, 10468)]