20003105

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{881}}^1$

素因数の和:1144

約数の個数: 16

約数和(自身を含む): 25401600

約数和(自身を除く): 5398495

約数列:

[1, 5, 19, 95, 239, 881, 1195, 4405, 4541, 16739, 22705, 83695, 210559, 1052795, 4000621, 20003105]

約数ペア:

[(1, 20003105), (5, 4000621), (19, 1052795), (95, 210559), (239, 83695), (881, 22705), (1195, 16739), (4405, 4541)]