21298136

素因数分解:

$2^3\times {\mathrm{107}}^1\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 19525864

約数列:

[1, 2, 4, 8, 107, 139, 179, 214, 278, 358, 428, 556, 716, 856, 1112, 1432, 14873, 19153, 24881, 29746, 38306, 49762, 59492, 76612, 99524, 118984, 153224, 199048, 2662267, 5324534, 10649068, 21298136]

約数ペア:

[(1, 21298136), (2, 10649068), (4, 5324534), (8, 2662267), (107, 199048), (139, 153224), (179, 118984), (214, 99524), (278, 76612), (358, 59492), (428, 49762), (556, 38306), (716, 29746), (856, 24881), (1112, 19153), (1432, 14873)]