21218538

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{8689}}^1$

素因数の和:8742

約数の個数: 32

約数和(自身を含む): 47551680

約数和(自身を除く): 26333142

約数列:

[1, 2, 3, 6, 11, 22, 33, 37, 66, 74, 111, 222, 407, 814, 1221, 2442, 8689, 17378, 26067, 52134, 95579, 191158, 286737, 321493, 573474, 642986, 964479, 1928958, 3536423, 7072846, 10609269, 21218538]

約数ペア:

[(1, 21218538), (2, 10609269), (3, 7072846), (6, 3536423), (11, 1928958), (22, 964479), (33, 642986), (37, 573474), (66, 321493), (74, 286737), (111, 191158), (222, 95579), (407, 52134), (814, 26067), (1221, 17378), (2442, 8689)]