21174272

素因数分解:

$2^{11}\times 7^2\times {\mathrm{211}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 49483980

約数和(自身を除く): 28309708

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 211, 224, 256, 392, 422, 448, 512, 784, 844, 896, 1024, 1477, 1568, 1688, 1792, 2048, 2954, 3136, 3376, 3584, 5908, 6272, 6752, 7168, 10339, 11816, 12544, 13504, 14336, 20678, 23632, 25088, 27008, 41356, 47264, 50176, 54016, 82712, 94528, 100352, 108032, 165424, 189056, 216064, 330848, 378112, 432128, 661696, 756224, 1323392, 1512448, 2646784, 3024896, 5293568, 10587136, 21174272]

約数ペア:

[(1, 21174272), (2, 10587136), (4, 5293568), (7, 3024896), (8, 2646784), (14, 1512448), (16, 1323392), (28, 756224), (32, 661696), (49, 432128), (56, 378112), (64, 330848), (98, 216064), (112, 189056), (128, 165424), (196, 108032), (211, 100352), (224, 94528), (256, 82712), (392, 54016), (422, 50176), (448, 47264), (512, 41356), (784, 27008), (844, 25088), (896, 23632), (1024, 20678), (1477, 14336), (1568, 13504), (1688, 12544), (1792, 11816), (2048, 10339), (2954, 7168), (3136, 6752), (3376, 6272), (3584, 5908)]