20520025

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{281}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 26855424

約数和(自身を除く): 6335399

約数列:

[1, 5, 23, 25, 115, 127, 281, 575, 635, 1405, 2921, 3175, 6463, 7025, 14605, 32315, 35687, 73025, 161575, 178435, 820801, 892175, 4104005, 20520025]

約数ペア:

[(1, 20520025), (5, 4104005), (23, 892175), (25, 820801), (115, 178435), (127, 161575), (281, 73025), (575, 35687), (635, 32315), (1405, 14605), (2921, 7025), (3175, 6463)]