20651575

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{6211}}^1$

素因数の和:6247

約数の個数: 24

約数和(自身を含む): 30811520

約数和(自身を除く): 10159945

約数列:

[1, 5, 7, 19, 25, 35, 95, 133, 175, 475, 665, 3325, 6211, 31055, 43477, 118009, 155275, 217385, 590045, 826063, 1086925, 2950225, 4130315, 20651575]

約数ペア:

[(1, 20651575), (5, 4130315), (7, 2950225), (19, 1086925), (25, 826063), (35, 590045), (95, 217385), (133, 155275), (175, 118009), (475, 43477), (665, 31055), (3325, 6211)]