21191296

素因数分解:

$2^7\times 7^1\times {\mathrm{67}}^1\times {\mathrm{353}}^1$

素因数の和:441

約数の個数: 64

約数和(自身を含む): 49106880

約数和(自身を除く): 27915584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 67, 112, 128, 134, 224, 268, 353, 448, 469, 536, 706, 896, 938, 1072, 1412, 1876, 2144, 2471, 2824, 3752, 4288, 4942, 5648, 7504, 8576, 9884, 11296, 15008, 19768, 22592, 23651, 30016, 39536, 45184, 47302, 60032, 79072, 94604, 158144, 165557, 189208, 316288, 331114, 378416, 662228, 756832, 1324456, 1513664, 2648912, 3027328, 5297824, 10595648, 21191296]

約数ペア:

[(1, 21191296), (2, 10595648), (4, 5297824), (7, 3027328), (8, 2648912), (14, 1513664), (16, 1324456), (28, 756832), (32, 662228), (56, 378416), (64, 331114), (67, 316288), (112, 189208), (128, 165557), (134, 158144), (224, 94604), (268, 79072), (353, 60032), (448, 47302), (469, 45184), (536, 39536), (706, 30016), (896, 23651), (938, 22592), (1072, 19768), (1412, 15008), (1876, 11296), (2144, 9884), (2471, 8576), (2824, 7504), (3752, 5648), (4288, 4942)]