19187728

素因数分解:

$2^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2557}}^1$

素因数の和:2639

約数の個数: 40

約数和(自身を含む): 43138112

約数和(自身を除く): 23950384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 67, 112, 134, 268, 469, 536, 938, 1072, 1876, 2557, 3752, 5114, 7504, 10228, 17899, 20456, 35798, 40912, 71596, 143192, 171319, 286384, 342638, 685276, 1199233, 1370552, 2398466, 2741104, 4796932, 9593864, 19187728]

約数ペア:

[(1, 19187728), (2, 9593864), (4, 4796932), (7, 2741104), (8, 2398466), (14, 1370552), (16, 1199233), (28, 685276), (56, 342638), (67, 286384), (112, 171319), (134, 143192), (268, 71596), (469, 40912), (536, 35798), (938, 20456), (1072, 17899), (1876, 10228), (2557, 7504), (3752, 5114)]