21665242

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{643}}^1\times {\mathrm{991}}^1$

素因数の和:1653

約数の個数: 16

約数和(自身を含む): 34497792

約数和(自身を除く): 12832550

約数列:

[1, 2, 17, 34, 643, 991, 1286, 1982, 10931, 16847, 21862, 33694, 637213, 1274426, 10832621, 21665242]

約数ペア:

[(1, 21665242), (2, 10832621), (17, 1274426), (34, 637213), (643, 33694), (991, 21862), (1286, 16847), (1982, 10931)]