18887900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{9941}}^1$

素因数の和:9974

約数の個数: 36

約数和(自身を含む): 43148280

約数和(自身を除く): 24260380

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 9941, 19882, 39764, 49705, 99410, 188879, 198820, 248525, 377758, 497050, 755516, 944395, 994100, 1888790, 3777580, 4721975, 9443950, 18887900]

約数ペア:

[(1, 18887900), (2, 9443950), (4, 4721975), (5, 3777580), (10, 1888790), (19, 994100), (20, 944395), (25, 755516), (38, 497050), (50, 377758), (76, 248525), (95, 198820), (100, 188879), (190, 99410), (380, 49705), (475, 39764), (950, 19882), (1900, 9941)]