21979376

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{13337}}^1$

素因数の和:13448

約数の個数: 20

約数和(自身を含む): 43001712

約数和(自身を除く): 21022336

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 13337, 26674, 53348, 106696, 213392, 1373711, 2747422, 5494844, 10989688, 21979376]

約数ペア:

[(1, 21979376), (2, 10989688), (4, 5494844), (8, 2747422), (16, 1373711), (103, 213392), (206, 106696), (412, 53348), (824, 26674), (1648, 13337)]