21163788

素因数分解:

$2^2\times 3^3\times {\mathrm{127}}^1\times {\mathrm{1543}}^1$

素因数の和:1683

約数の個数: 48

約数和(自身を含む): 55336960

約数和(自身を除く): 34173172

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 127, 254, 381, 508, 762, 1143, 1524, 1543, 2286, 3086, 3429, 4572, 4629, 6172, 6858, 9258, 13716, 13887, 18516, 27774, 41661, 55548, 83322, 166644, 195961, 391922, 587883, 783844, 1175766, 1763649, 2351532, 3527298, 5290947, 7054596, 10581894, 21163788]

約数ペア:

[(1, 21163788), (2, 10581894), (3, 7054596), (4, 5290947), (6, 3527298), (9, 2351532), (12, 1763649), (18, 1175766), (27, 783844), (36, 587883), (54, 391922), (108, 195961), (127, 166644), (254, 83322), (381, 55548), (508, 41661), (762, 27774), (1143, 18516), (1524, 13887), (1543, 13716), (2286, 9258), (3086, 6858), (3429, 6172), (4572, 4629)]