21236048

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{15991}}^1$

素因数の和:16082

約数の個数: 20

約数和(自身を含む): 41643168

約数和(自身を除く): 20407120

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 15991, 31982, 63964, 127928, 255856, 1327253, 2654506, 5309012, 10618024, 21236048]

約数ペア:

[(1, 21236048), (2, 10618024), (4, 5309012), (8, 2654506), (16, 1327253), (83, 255856), (166, 127928), (332, 63964), (664, 31982), (1328, 15991)]