21539958

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{193}}^1$

素因数の和:317

約数の個数: 64

約数和(自身を含む): 50284800

約数和(自身を除く): 28744842

約数列:

[1, 2, 3, 6, 11, 19, 22, 33, 38, 57, 66, 89, 114, 178, 193, 209, 267, 386, 418, 534, 579, 627, 979, 1158, 1254, 1691, 1958, 2123, 2937, 3382, 3667, 4246, 5073, 5874, 6369, 7334, 10146, 11001, 12738, 17177, 18601, 22002, 34354, 37202, 40337, 51531, 55803, 80674, 103062, 111606, 121011, 188947, 242022, 326363, 377894, 566841, 652726, 979089, 1133682, 1958178, 3589993, 7179986, 10769979, 21539958]

約数ペア:

[(1, 21539958), (2, 10769979), (3, 7179986), (6, 3589993), (11, 1958178), (19, 1133682), (22, 979089), (33, 652726), (38, 566841), (57, 377894), (66, 326363), (89, 242022), (114, 188947), (178, 121011), (193, 111606), (209, 103062), (267, 80674), (386, 55803), (418, 51531), (534, 40337), (579, 37202), (627, 34354), (979, 22002), (1158, 18601), (1254, 17177), (1691, 12738), (1958, 11001), (2123, 10146), (2937, 7334), (3382, 6369), (3667, 5874), (4246, 5073)]