18804940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12211}}^1$

素因数の和:12238

約数の個数: 48

約数和(自身を含む): 49238784

約数和(自身を除く): 30433844

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, 12211, 24422, 48844, 61055, 85477, 122110, 134321, 170954, 244220, 268642, 341908, 427385, 537284, 671605, 854770, 940247, 1343210, 1709540, 1880494, 2686420, 3760988, 4701235, 9402470, 18804940]

約数ペア:

[(1, 18804940), (2, 9402470), (4, 4701235), (5, 3760988), (7, 2686420), (10, 1880494), (11, 1709540), (14, 1343210), (20, 940247), (22, 854770), (28, 671605), (35, 537284), (44, 427385), (55, 341908), (70, 268642), (77, 244220), (110, 170954), (140, 134321), (154, 122110), (220, 85477), (308, 61055), (385, 48844), (770, 24422), (1540, 12211)]