21389212

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{21649}}^1$

素因数の和:21685

約数の個数: 24

約数和(自身を含む): 42434000

約数和(自身を除く): 21044788

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 21649, 43298, 86596, 281437, 411331, 562874, 822662, 1125748, 1645324, 5347303, 10694606, 21389212]

約数ペア:

[(1, 21389212), (2, 10694606), (4, 5347303), (13, 1645324), (19, 1125748), (26, 822662), (38, 562874), (52, 411331), (76, 281437), (247, 86596), (494, 43298), (988, 21649)]