20597000

素因数分解:

$2^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{479}}^1$

素因数の和:543

約数の個数: 64

約数和(自身を含む): 49420800

約数和(自身を除く): 28823800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 250, 344, 430, 479, 500, 860, 958, 1000, 1075, 1720, 1916, 2150, 2395, 3832, 4300, 4790, 5375, 8600, 9580, 10750, 11975, 19160, 20597, 21500, 23950, 41194, 43000, 47900, 59875, 82388, 95800, 102985, 119750, 164776, 205970, 239500, 411940, 479000, 514925, 823880, 1029850, 2059700, 2574625, 4119400, 5149250, 10298500, 20597000]

約数ペア:

[(1, 20597000), (2, 10298500), (4, 5149250), (5, 4119400), (8, 2574625), (10, 2059700), (20, 1029850), (25, 823880), (40, 514925), (43, 479000), (50, 411940), (86, 239500), (100, 205970), (125, 164776), (172, 119750), (200, 102985), (215, 95800), (250, 82388), (344, 59875), (430, 47900), (479, 43000), (500, 41194), (860, 23950), (958, 21500), (1000, 20597), (1075, 19160), (1720, 11975), (1916, 10750), (2150, 9580), (2395, 8600), (3832, 5375), (4300, 4790)]