201991855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{72269}}^1$

素因数の和:72330

約数の個数: 16

約数和(自身を含む): 267109920

約数和(自身を除く): 65118065

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 72269, 361345, 939497, 3107567, 4697485, 15537835, 40398371, 201991855]

約数ペア:

[(1, 201991855), (5, 40398371), (13, 15537835), (43, 4697485), (65, 3107567), (215, 939497), (559, 361345), (2795, 72269)]