42720020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{305143}}^1$

素因数の和:305159

約数の個数: 24

約数和(自身を含む): 102528384

約数和(自身を除く): 59808364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 305143, 610286, 1220572, 1525715, 2136001, 3051430, 4272002, 6102860, 8544004, 10680005, 21360010, 42720020]

約数ペア:

[(1, 42720020), (2, 21360010), (4, 10680005), (5, 8544004), (7, 6102860), (10, 4272002), (14, 3051430), (20, 2136001), (28, 1525715), (35, 1220572), (70, 610286), (140, 305143)]