28457390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{457}}^1\times {\mathrm{479}}^1$

素因数の和:956

約数の個数: 32

約数和(自身を含む): 55399680

約数和(自身を除く): 26942290

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 457, 479, 914, 958, 2285, 2395, 4570, 4790, 5941, 6227, 11882, 12454, 29705, 31135, 59410, 62270, 218903, 437806, 1094515, 2189030, 2845739, 5691478, 14228695, 28457390]

約数ペア:

[(1, 28457390), (2, 14228695), (5, 5691478), (10, 2845739), (13, 2189030), (26, 1094515), (65, 437806), (130, 218903), (457, 62270), (479, 59410), (914, 31135), (958, 29705), (2285, 12454), (2395, 11882), (4570, 6227), (4790, 5941)]