21073168

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8389}}^1$

素因数の和:8554

約数の個数: 20

約数和(自身を含む): 41094220

約数和(自身を除く): 20021052

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8389, 16778, 33556, 67112, 134224, 1317073, 2634146, 5268292, 10536584, 21073168]

約数ペア:

[(1, 21073168), (2, 10536584), (4, 5268292), (8, 2634146), (16, 1317073), (157, 134224), (314, 67112), (628, 33556), (1256, 16778), (2512, 8389)]