81055760

素因数分解:

$2^4\times 5^1\times {\mathrm{1013197}}^1$

素因数の和:1013210

約数の個数: 20

約数和(自身を含む): 188454828

約数和(自身を除く): 107399068

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1013197, 2026394, 4052788, 5065985, 8105576, 10131970, 16211152, 20263940, 40527880, 81055760]

約数ペア:

[(1, 81055760), (2, 40527880), (4, 20263940), (5, 16211152), (8, 10131970), (10, 8105576), (16, 5065985), (20, 4052788), (40, 2026394), (80, 1013197)]