19956380

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4729}}^1$

素因数の和:4949

約数の個数: 24

約数和(自身を含む): 42115920

約数和(自身を除く): 22159540

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4729, 9458, 18916, 23645, 47290, 94580, 997819, 1995638, 3991276, 4989095, 9978190, 19956380]

約数ペア:

[(1, 19956380), (2, 9978190), (4, 4989095), (5, 3991276), (10, 1995638), (20, 997819), (211, 94580), (422, 47290), (844, 23645), (1055, 18916), (2110, 9458), (4220, 4729)]