21517903

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{5003}}^1$

素因数の和:5054

約数の個数: 16

約数和(自身を含む): 25940736

約数和(自身を除く): 4422833

約数列:

[1, 11, 17, 23, 187, 253, 391, 4301, 5003, 55033, 85051, 115069, 935561, 1265759, 1956173, 21517903]

約数ペア:

[(1, 21517903), (11, 1956173), (17, 1265759), (23, 935561), (187, 115069), (253, 85051), (391, 55033), (4301, 5003)]