180982780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{907}}^2$

素因数の和:1834

約数の個数: 36

約数和(自身を含む): 415072728

約数和(自身を除く): 234089948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 907, 1814, 3628, 4535, 9070, 9977, 18140, 19954, 39908, 49885, 99770, 199540, 822649, 1645298, 3290596, 4113245, 8226490, 9049139, 16452980, 18098278, 36196556, 45245695, 90491390, 180982780]

約数ペア:

[(1, 180982780), (2, 90491390), (4, 45245695), (5, 36196556), (10, 18098278), (11, 16452980), (20, 9049139), (22, 8226490), (44, 4113245), (55, 3290596), (110, 1645298), (220, 822649), (907, 199540), (1814, 99770), (3628, 49885), (4535, 39908), (9070, 19954), (9977, 18140)]