131112560

素因数分解:

$2^4\times 5^1\times {\mathrm{1638907}}^1$

素因数の和:1638920

約数の個数: 20

約数和(自身を含む): 304836888

約数和(自身を除く): 173724328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1638907, 3277814, 6555628, 8194535, 13111256, 16389070, 26222512, 32778140, 65556280, 131112560]

約数ペア:

[(1, 131112560), (2, 65556280), (4, 32778140), (5, 26222512), (8, 16389070), (10, 13111256), (16, 8194535), (20, 6555628), (40, 3277814), (80, 1638907)]