28484920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16561}}^1$

素因数の和:16615

約数の個数: 32

約数和(自身を含む): 65585520

約数和(自身を除く): 37100600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16561, 33122, 66244, 82805, 132488, 165610, 331220, 662440, 712123, 1424246, 2848492, 3560615, 5696984, 7121230, 14242460, 28484920]

約数ペア:

[(1, 28484920), (2, 14242460), (4, 7121230), (5, 5696984), (8, 3560615), (10, 2848492), (20, 1424246), (40, 712123), (43, 662440), (86, 331220), (172, 165610), (215, 132488), (344, 82805), (430, 66244), (860, 33122), (1720, 16561)]