278312560

素因数分解:

$2^4\times 5^1\times {\mathrm{3478907}}^1$

素因数の和:3478920

約数の個数: 20

約数和(自身を含む): 647076888

約数和(自身を除く): 368764328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3478907, 6957814, 13915628, 17394535, 27831256, 34789070, 55662512, 69578140, 139156280, 278312560]

約数ペア:

[(1, 278312560), (2, 139156280), (4, 69578140), (5, 55662512), (8, 34789070), (10, 27831256), (16, 17394535), (20, 13915628), (40, 6957814), (80, 3478907)]