21450208

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{51563}}^1$

素因数の和:51586

約数の個数: 24

約数和(自身を含む): 45479448

約数和(自身を除く): 24029240

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 51563, 103126, 206252, 412504, 670319, 825008, 1340638, 1650016, 2681276, 5362552, 10725104, 21450208]

約数ペア:

[(1, 21450208), (2, 10725104), (4, 5362552), (8, 2681276), (13, 1650016), (16, 1340638), (26, 825008), (32, 670319), (52, 412504), (104, 206252), (208, 103126), (416, 51563)]