19740248

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2221}}^1$

素因数の和:2339

約数の個数: 32

約数和(自身を含む): 40795920

約数和(自身を除く): 21055672

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 101, 202, 404, 808, 1111, 2221, 2222, 4442, 4444, 8884, 8888, 17768, 24431, 48862, 97724, 195448, 224321, 448642, 897284, 1794568, 2467531, 4935062, 9870124, 19740248]

約数ペア:

[(1, 19740248), (2, 9870124), (4, 4935062), (8, 2467531), (11, 1794568), (22, 897284), (44, 448642), (88, 224321), (101, 195448), (202, 97724), (404, 48862), (808, 24431), (1111, 17768), (2221, 8888), (2222, 8884), (4442, 4444)]