87319025

素因数分解:

$5^2\times {\mathrm{43}}^2\times {\mathrm{1889}}^1$

素因数の和:1985

約数の個数: 18

約数和(自身を含む): 110910870

約数和(自身を除く): 23591845

約数列:

[1, 5, 25, 43, 215, 1075, 1849, 1889, 9245, 9445, 46225, 47225, 81227, 406135, 2030675, 3492761, 17463805, 87319025]

約数ペア:

[(1, 87319025), (5, 17463805), (25, 3492761), (43, 2030675), (215, 406135), (1075, 81227), (1849, 47225), (1889, 46225), (9245, 9445)]