21156608

素因数分解:

$2^8\times {\mathrm{11}}^2\times {\mathrm{683}}^1$

素因数の和:721

約数の個数: 54

約数和(自身を含む): 46486692

約数和(自身を除く): 25330084

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 121, 128, 176, 242, 256, 352, 484, 683, 704, 968, 1366, 1408, 1936, 2732, 2816, 3872, 5464, 7513, 7744, 10928, 15026, 15488, 21856, 30052, 30976, 43712, 60104, 82643, 87424, 120208, 165286, 174848, 240416, 330572, 480832, 661144, 961664, 1322288, 1923328, 2644576, 5289152, 10578304, 21156608]

約数ペア:

[(1, 21156608), (2, 10578304), (4, 5289152), (8, 2644576), (11, 1923328), (16, 1322288), (22, 961664), (32, 661144), (44, 480832), (64, 330572), (88, 240416), (121, 174848), (128, 165286), (176, 120208), (242, 87424), (256, 82643), (352, 60104), (484, 43712), (683, 30976), (704, 30052), (968, 21856), (1366, 15488), (1408, 15026), (1936, 10928), (2732, 7744), (2816, 7513), (3872, 5464)]