21268412

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43943}}^1$

素因数の和:43969

約数の個数: 18

約数和(自身を含む): 40911864

約数和(自身を除く): 19643452

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43943, 87886, 175772, 483373, 966746, 1933492, 5317103, 10634206, 21268412]

約数ペア:

[(1, 21268412), (2, 10634206), (4, 5317103), (11, 1933492), (22, 966746), (44, 483373), (121, 175772), (242, 87886), (484, 43943)]