21038485

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{11161}}^1$

素因数の和:11208

約数の個数: 16

約数和(自身を含む): 28128240

約数和(自身を除く): 7089755

約数列:

[1, 5, 13, 29, 65, 145, 377, 1885, 11161, 55805, 145093, 323669, 725465, 1618345, 4207697, 21038485]

約数ペア:

[(1, 21038485), (5, 4207697), (13, 1618345), (29, 725465), (65, 323669), (145, 145093), (377, 55805), (1885, 11161)]