201219109

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71329}}^1$

素因数の和:71380

約数の個数: 16

約数和(自身を含む): 255646720

約数和(自身を除く): 54427611

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 71329, 499303, 927277, 2211199, 6490939, 15478393, 28745587, 201219109]

約数ペア:

[(1, 201219109), (7, 28745587), (13, 15478393), (31, 6490939), (91, 2211199), (217, 927277), (403, 499303), (2821, 71329)]