21063248

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{359}}^1$

素因数の和:579

約数の個数: 40

約数和(自身を含む): 43300800

約数和(自身を除く): 22237552

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 193, 304, 359, 386, 718, 772, 1436, 1544, 2872, 3088, 3667, 5744, 6821, 7334, 13642, 14668, 27284, 29336, 54568, 58672, 69287, 109136, 138574, 277148, 554296, 1108592, 1316453, 2632906, 5265812, 10531624, 21063248]

約数ペア:

[(1, 21063248), (2, 10531624), (4, 5265812), (8, 2632906), (16, 1316453), (19, 1108592), (38, 554296), (76, 277148), (152, 138574), (193, 109136), (304, 69287), (359, 58672), (386, 54568), (718, 29336), (772, 27284), (1436, 14668), (1544, 13642), (2872, 7334), (3088, 6821), (3667, 5744)]