21498687

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2687}}^1$

素因数の和:2827

約数の個数: 24

約数和(自身を含む): 35782656

約数和(自身を除く): 14283969

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 2667, 2687, 8001, 8061, 18809, 24183, 56427, 169281, 341249, 1023747, 2388743, 3071241, 7166229, 21498687]

約数ペア:

[(1, 21498687), (3, 7166229), (7, 3071241), (9, 2388743), (21, 1023747), (63, 341249), (127, 169281), (381, 56427), (889, 24183), (1143, 18809), (2667, 8061), (2687, 8001)]