21499938

素因数分解:

$2^1\times 3^3\times {\mathrm{61}}^2\times {\mathrm{107}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 49027680

約数和(自身を除く): 27527742

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 61, 107, 122, 183, 214, 321, 366, 549, 642, 963, 1098, 1647, 1926, 2889, 3294, 3721, 5778, 6527, 7442, 11163, 13054, 19581, 22326, 33489, 39162, 58743, 66978, 100467, 117486, 176229, 200934, 352458, 398147, 796294, 1194441, 2388882, 3583323, 7166646, 10749969, 21499938]

約数ペア:

[(1, 21499938), (2, 10749969), (3, 7166646), (6, 3583323), (9, 2388882), (18, 1194441), (27, 796294), (54, 398147), (61, 352458), (107, 200934), (122, 176229), (183, 117486), (214, 100467), (321, 66978), (366, 58743), (549, 39162), (642, 33489), (963, 22326), (1098, 19581), (1647, 13054), (1926, 11163), (2889, 7442), (3294, 6527), (3721, 5778)]