81504080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145543}}^1$

素因数の和:145563

約数の個数: 40

約数和(自身を含む): 216569472

約数和(自身を除く): 135065392

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145543, 291086, 582172, 727715, 1018801, 1164344, 1455430, 2037602, 2328688, 2910860, 4075204, 5094005, 5821720, 8150408, 10188010, 11643440, 16300816, 20376020, 40752040, 81504080]

約数ペア:

[(1, 81504080), (2, 40752040), (4, 20376020), (5, 16300816), (7, 11643440), (8, 10188010), (10, 8150408), (14, 5821720), (16, 5094005), (20, 4075204), (28, 2910860), (35, 2328688), (40, 2037602), (56, 1455430), (70, 1164344), (80, 1018801), (112, 727715), (140, 582172), (280, 291086), (560, 145543)]