21249872

素因数分解:

$2^4\times 7^1\times {\mathrm{337}}^1\times {\mathrm{563}}^1$

素因数の和:915

約数の個数: 40

約数和(自身を含む): 47276736

約数和(自身を除く): 26026864

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 337, 563, 674, 1126, 1348, 2252, 2359, 2696, 3941, 4504, 4718, 5392, 7882, 9008, 9436, 15764, 18872, 31528, 37744, 63056, 189731, 379462, 758924, 1328117, 1517848, 2656234, 3035696, 5312468, 10624936, 21249872]

約数ペア:

[(1, 21249872), (2, 10624936), (4, 5312468), (7, 3035696), (8, 2656234), (14, 1517848), (16, 1328117), (28, 758924), (56, 379462), (112, 189731), (337, 63056), (563, 37744), (674, 31528), (1126, 18872), (1348, 15764), (2252, 9436), (2359, 9008), (2696, 7882), (3941, 5392), (4504, 4718)]