209307215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{523}}^1$

素因数の和:719

約数の個数: 32

約数和(自身を含む): 278885376

約数和(自身を除く): 69578161

約数列:

[1, 5, 13, 47, 65, 131, 235, 523, 611, 655, 1703, 2615, 3055, 6157, 6799, 8515, 24581, 30785, 33995, 68513, 80041, 122905, 319553, 342565, 400205, 890669, 1597765, 3220111, 4453345, 16100555, 41861443, 209307215]

約数ペア:

[(1, 209307215), (5, 41861443), (13, 16100555), (47, 4453345), (65, 3220111), (131, 1597765), (235, 890669), (523, 400205), (611, 342565), (655, 319553), (1703, 122905), (2615, 80041), (3055, 68513), (6157, 33995), (6799, 30785), (8515, 24581)]