278312120

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{53113}}^1$

素因数の和:53255

約数の個数: 32

約数和(自身を含む): 630994320

約数和(自身を除く): 352682200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 53113, 106226, 212452, 265565, 424904, 531130, 1062260, 2124520, 6957803, 13915606, 27831212, 34789015, 55662424, 69578030, 139156060, 278312120]

約数ペア:

[(1, 278312120), (2, 139156060), (4, 69578030), (5, 55662424), (8, 34789015), (10, 27831212), (20, 13915606), (40, 6957803), (131, 2124520), (262, 1062260), (524, 531130), (655, 424904), (1048, 265565), (1310, 212452), (2620, 106226), (5240, 53113)]