18208025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{907}}^1$

素因数の和:1001

約数の個数: 24

約数和(自身を含む): 24995424

約数和(自身を除く): 6787399

約数列:

[1, 5, 11, 25, 55, 73, 275, 365, 803, 907, 1825, 4015, 4535, 9977, 20075, 22675, 49885, 66211, 249425, 331055, 728321, 1655275, 3641605, 18208025]

約数ペア:

[(1, 18208025), (5, 3641605), (11, 1655275), (25, 728321), (55, 331055), (73, 249425), (275, 66211), (365, 49885), (803, 22675), (907, 20075), (1825, 9977), (4015, 4535)]