18563209

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:317

約数の個数: 24

約数和(自身を含む): 23055360

約数和(自身を除く): 4492151

約数列:

[1, 7, 19, 49, 127, 133, 157, 889, 931, 1099, 2413, 2983, 6223, 7693, 16891, 19939, 20881, 118237, 139573, 146167, 378841, 977011, 2651887, 18563209]

約数ペア:

[(1, 18563209), (7, 2651887), (19, 977011), (49, 378841), (127, 146167), (133, 139573), (157, 118237), (889, 20881), (931, 19939), (1099, 16891), (2413, 7693), (2983, 6223)]