80689040

素因数分解:

$2^4\times 5^1\times {\mathrm{1008613}}^1$

素因数の和:1008626

約数の個数: 20

約数和(自身を含む): 187602204

約数和(自身を除く): 106913164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1008613, 2017226, 4034452, 5043065, 8068904, 10086130, 16137808, 20172260, 40344520, 80689040]

約数ペア:

[(1, 80689040), (2, 40344520), (4, 20172260), (5, 16137808), (8, 10086130), (10, 8068904), (16, 5043065), (20, 4034452), (40, 2017226), (80, 1008613)]