21307112449

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1\times {\mathrm{7151}}^1$

素因数の和:7741

約数の個数: 32

約数和(自身を含む): 26282741760

約数和(自身を除く): 4975629311

約数列:

[1, 7, 19, 43, 133, 301, 521, 817, 3647, 5719, 7151, 9899, 22403, 50057, 69293, 135869, 156821, 307493, 425657, 951083, 2152451, 2979599, 3725671, 5842367, 26079697, 40896569, 70787749, 160203853, 495514243, 1121426971, 3043873207, 21307112449]

約数ペア:

[(1, 21307112449), (7, 3043873207), (19, 1121426971), (43, 495514243), (133, 160203853), (301, 70787749), (521, 40896569), (817, 26079697), (3647, 5842367), (5719, 3725671), (7151, 2979599), (9899, 2152451), (22403, 951083), (50057, 425657), (69293, 307493), (135869, 156821)]