19993856

素因数分解:

$2^8\times {\mathrm{78101}}^1$

素因数の和:78117

約数の個数: 18

約数和(自身を含む): 39910122

約数和(自身を除く): 19916266

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 78101, 156202, 312404, 624808, 1249616, 2499232, 4998464, 9996928, 19993856]

約数ペア:

[(1, 19993856), (2, 9996928), (4, 4998464), (8, 2499232), (16, 1249616), (32, 624808), (64, 312404), (128, 156202), (256, 78101)]