19388485

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2909}}^1$

素因数の和:2988

約数の個数: 16

約数和(自身を含む): 24583680

約数和(自身を除く): 5195195

約数列:

[1, 5, 31, 43, 155, 215, 1333, 2909, 6665, 14545, 90179, 125087, 450895, 625435, 3877697, 19388485]

約数ペア:

[(1, 19388485), (5, 3877697), (31, 625435), (43, 450895), (155, 125087), (215, 90179), (1333, 14545), (2909, 6665)]