19898860

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21169}}^1$

素因数の和:21225

約数の個数: 24

約数和(自身を含む): 42678720

約数和(自身を除く): 22779860

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21169, 42338, 84676, 105845, 211690, 423380, 994943, 1989886, 3979772, 4974715, 9949430, 19898860]

約数ペア:

[(1, 19898860), (2, 9949430), (4, 4974715), (5, 3979772), (10, 1989886), (20, 994943), (47, 423380), (94, 211690), (188, 105845), (235, 84676), (470, 42338), (940, 21169)]