208565979

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1\times {\mathrm{241}}^1$

素因数の和:571

約数の個数: 32

約数和(自身を含む): 301086720

約数和(自身を除く): 92520741

約数列:

[1, 3, 17, 51, 71, 213, 239, 241, 717, 723, 1207, 3621, 4063, 4097, 12189, 12291, 16969, 17111, 50907, 51333, 57599, 172797, 288473, 290887, 865419, 872661, 979183, 2937549, 4089529, 12268587, 69521993, 208565979]

約数ペア:

[(1, 208565979), (3, 69521993), (17, 12268587), (51, 4089529), (71, 2937549), (213, 979183), (239, 872661), (241, 865419), (717, 290887), (723, 288473), (1207, 172797), (3621, 57599), (4063, 51333), (4097, 50907), (12189, 17111), (12291, 16969)]