21342905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{1301}}^1$

素因数の和:1516

約数の個数: 16

約数和(自身を含む): 27279504

約数和(自身を除く): 5936599

約数列:

[1, 5, 17, 85, 193, 965, 1301, 3281, 6505, 16405, 22117, 110585, 251093, 1255465, 4268581, 21342905]

約数ペア:

[(1, 21342905), (5, 4268581), (17, 1255465), (85, 251093), (193, 110585), (965, 22117), (1301, 16405), (3281, 6505)]