21700744

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:230

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 24747896

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 53, 62, 104, 106, 124, 127, 212, 248, 254, 403, 424, 508, 689, 806, 1016, 1378, 1612, 1643, 1651, 2756, 3224, 3286, 3302, 3937, 5512, 6572, 6604, 6731, 7874, 13144, 13208, 13462, 15748, 21359, 26924, 31496, 42718, 51181, 53848, 85436, 87503, 102362, 170872, 175006, 204724, 208661, 350012, 409448, 417322, 700024, 834644, 1669288, 2712593, 5425186, 10850372, 21700744]

約数ペア:

[(1, 21700744), (2, 10850372), (4, 5425186), (8, 2712593), (13, 1669288), (26, 834644), (31, 700024), (52, 417322), (53, 409448), (62, 350012), (104, 208661), (106, 204724), (124, 175006), (127, 170872), (212, 102362), (248, 87503), (254, 85436), (403, 53848), (424, 51181), (508, 42718), (689, 31496), (806, 26924), (1016, 21359), (1378, 15748), (1612, 13462), (1643, 13208), (1651, 13144), (2756, 7874), (3224, 6731), (3286, 6604), (3302, 6572), (3937, 5512)]