20657135

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{1307}}^1$

素因数の和:1450

約数の個数: 16

約数和(自身を含む): 25898400

約数和(自身を除く): 5241265

約数列:

[1, 5, 29, 109, 145, 545, 1307, 3161, 6535, 15805, 37903, 142463, 189515, 712315, 4131427, 20657135]

約数ペア:

[(1, 20657135), (5, 4131427), (29, 712315), (109, 189515), (145, 142463), (545, 37903), (1307, 15805), (3161, 6535)]