890390895

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{81203}}^1$

素因数の和:81271

約数の個数: 32

約数和(自身を含む): 1543525632

約数和(自身を除く): 653134737

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 2193, 3655, 10965, 81203, 243609, 406015, 1218045, 1380451, 3491729, 4141353, 6902255, 10475187, 17458645, 20706765, 52375935, 59359393, 178078179, 296796965, 890390895]

約数ペア:

[(1, 890390895), (3, 296796965), (5, 178078179), (15, 59359393), (17, 52375935), (43, 20706765), (51, 17458645), (85, 10475187), (129, 6902255), (215, 4141353), (255, 3491729), (645, 1380451), (731, 1218045), (2193, 406015), (3655, 243609), (10965, 81203)]