21361265

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{5347}}^1$

素因数の和:5416

約数の個数: 16

約数和(自身を含む): 27724032

約数和(自身を除く): 6362767

約数列:

[1, 5, 17, 47, 85, 235, 799, 3995, 5347, 26735, 90899, 251309, 454495, 1256545, 4272253, 21361265]

約数ペア:

[(1, 21361265), (5, 4272253), (17, 1256545), (47, 454495), (85, 251309), (235, 90899), (799, 26735), (3995, 5347)]