81468840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{678907}}^1$

素因数の和:678921

約数の個数: 32

約数和(自身を含む): 244406880

約数和(自身を除く): 162938040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 678907, 1357814, 2036721, 2715628, 3394535, 4073442, 5431256, 6789070, 8146884, 10183605, 13578140, 16293768, 20367210, 27156280, 40734420, 81468840]

約数ペア:

[(1, 81468840), (2, 40734420), (3, 27156280), (4, 20367210), (5, 16293768), (6, 13578140), (8, 10183605), (10, 8146884), (12, 6789070), (15, 5431256), (20, 4073442), (24, 3394535), (30, 2715628), (40, 2036721), (60, 1357814), (120, 678907)]