8747920

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2543}}^1$

素因数の和:2599

約数の個数: 40

約数和(自身を含む): 20820096

約数和(自身を除く): 12072176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 2543, 3440, 5086, 10172, 12715, 20344, 25430, 40688, 50860, 101720, 109349, 203440, 218698, 437396, 546745, 874792, 1093490, 1749584, 2186980, 4373960, 8747920]

約数ペア:

[(1, 8747920), (2, 4373960), (4, 2186980), (5, 1749584), (8, 1093490), (10, 874792), (16, 546745), (20, 437396), (40, 218698), (43, 203440), (80, 109349), (86, 101720), (172, 50860), (215, 40688), (344, 25430), (430, 20344), (688, 12715), (860, 10172), (1720, 5086), (2543, 3440)]