21019871

素因数分解:

${\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1103}}^1$

素因数の和:1198

約数の個数: 16

約数和(自身を含む): 23846400

約数和(自身を除く): 2826529

約数列:

[1, 17, 19, 59, 323, 1003, 1103, 1121, 18751, 19057, 20957, 65077, 356269, 1106309, 1236463, 21019871]

約数ペア:

[(1, 21019871), (17, 1236463), (19, 1106309), (59, 356269), (323, 65077), (1003, 20957), (1103, 19057), (1121, 18751)]