198985040

素因数分解:

$2^4\times 5^1\times {\mathrm{2487313}}^1$

素因数の和:2487326

約数の個数: 20

約数和(自身を含む): 462640404

約数和(自身を除く): 263655364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2487313, 4974626, 9949252, 12436565, 19898504, 24873130, 39797008, 49746260, 99492520, 198985040]

約数ペア:

[(1, 198985040), (2, 99492520), (4, 49746260), (5, 39797008), (8, 24873130), (10, 19898504), (16, 12436565), (20, 9949252), (40, 4974626), (80, 2487313)]