21621248

素因数分解:

$2^9\times {\mathrm{11}}^2\times {\mathrm{349}}^1$

素因数の和:389

約数の個数: 60

約数和(自身を含む): 47620650

約数和(自身を除く): 25999402

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 121, 128, 176, 242, 256, 349, 352, 484, 512, 698, 704, 968, 1396, 1408, 1936, 2792, 2816, 3839, 3872, 5584, 5632, 7678, 7744, 11168, 15356, 15488, 22336, 30712, 30976, 42229, 44672, 61424, 61952, 84458, 89344, 122848, 168916, 178688, 245696, 337832, 491392, 675664, 982784, 1351328, 1965568, 2702656, 5405312, 10810624, 21621248]

約数ペア:

[(1, 21621248), (2, 10810624), (4, 5405312), (8, 2702656), (11, 1965568), (16, 1351328), (22, 982784), (32, 675664), (44, 491392), (64, 337832), (88, 245696), (121, 178688), (128, 168916), (176, 122848), (242, 89344), (256, 84458), (349, 61952), (352, 61424), (484, 44672), (512, 42229), (698, 30976), (704, 30712), (968, 22336), (1396, 15488), (1408, 15356), (1936, 11168), (2792, 7744), (2816, 7678), (3839, 5632), (3872, 5584)]