21394329

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 32223744

約数和(自身を除く): 10829415

約数列:

[1, 3, 11, 33, 73, 83, 107, 219, 249, 321, 803, 913, 1177, 2409, 2739, 3531, 6059, 7811, 8881, 18177, 23433, 26643, 66649, 85921, 97691, 199947, 257763, 293073, 648313, 1944939, 7131443, 21394329]

約数ペア:

[(1, 21394329), (3, 7131443), (11, 1944939), (33, 648313), (73, 293073), (83, 257763), (107, 199947), (219, 97691), (249, 85921), (321, 66649), (803, 26643), (913, 23433), (1177, 18177), (2409, 8881), (2739, 7811), (3531, 6059)]