78801040

素因数分解:

$2^4\times 5^1\times {\mathrm{985013}}^1$

素因数の和:985026

約数の個数: 20

約数和(自身を含む): 183212604

約数和(自身を除く): 104411564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 985013, 1970026, 3940052, 4925065, 7880104, 9850130, 15760208, 19700260, 39400520, 78801040]

約数ペア:

[(1, 78801040), (2, 39400520), (4, 19700260), (5, 15760208), (8, 9850130), (10, 7880104), (16, 4925065), (20, 3940052), (40, 1970026), (80, 985013)]