21405295

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{10949}}^1$

素因数の和:10994

約数の個数: 16

約数和(自身を含む): 28382400

約数和(自身を除く): 6977105

約数列:

[1, 5, 17, 23, 85, 115, 391, 1955, 10949, 54745, 186133, 251827, 930665, 1259135, 4281059, 21405295]

約数ペア:

[(1, 21405295), (5, 4281059), (17, 1259135), (23, 930665), (85, 251827), (115, 186133), (391, 54745), (1955, 10949)]