21540568

素因数分解:

$2^3\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1823}}^1$

素因数の和:2047

約数の個数: 32

約数和(自身を含む): 46402560

約数和(自身を除く): 24861992

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 211, 422, 844, 1477, 1688, 1823, 2954, 3646, 5908, 7292, 11816, 12761, 14584, 25522, 51044, 102088, 384653, 769306, 1538612, 2692571, 3077224, 5385142, 10770284, 21540568]

約数ペア:

[(1, 21540568), (2, 10770284), (4, 5385142), (7, 3077224), (8, 2692571), (14, 1538612), (28, 769306), (56, 384653), (211, 102088), (422, 51044), (844, 25522), (1477, 14584), (1688, 12761), (1823, 11816), (2954, 7292), (3646, 5908)]