20488517

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{373}}^1$

素因数の和:465

約数の個数: 24

約数和(自身を含む): 25581600

約数和(自身を除く): 5093083

約数列:

[1, 7, 19, 49, 59, 133, 373, 413, 931, 1121, 2611, 2891, 7087, 7847, 18277, 22007, 49609, 54929, 154049, 347263, 418133, 1078343, 2926931, 20488517]

約数ペア:

[(1, 20488517), (7, 2926931), (19, 1078343), (49, 418133), (59, 347263), (133, 154049), (373, 54929), (413, 49609), (931, 22007), (1121, 18277), (2611, 7847), (2891, 7087)]