20911504

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{19507}}^1$

素因数の和:19582

約数の個数: 20

約数和(自身を含む): 41122864

約数和(自身を除く): 20211360

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 19507, 39014, 78028, 156056, 312112, 1306969, 2613938, 5227876, 10455752, 20911504]

約数ペア:

[(1, 20911504), (2, 10455752), (4, 5227876), (8, 2613938), (16, 1306969), (67, 312112), (134, 156056), (268, 78028), (536, 39014), (1072, 19507)]