21028269

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{21701}}^1$

素因数の和:21740

約数の個数: 16

約数和(自身を含む): 31250880

約数和(自身を除く): 10222611

約数列:

[1, 3, 17, 19, 51, 57, 323, 969, 21701, 65103, 368917, 412319, 1106751, 1236957, 7009423, 21028269]

約数ペア:

[(1, 21028269), (3, 7009423), (17, 1236957), (19, 1106751), (51, 412319), (57, 368917), (323, 65103), (969, 21701)]