81564140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{582601}}^1$

素因数の和:582617

約数の個数: 24

約数和(自身を含む): 195754272

約数和(自身を除く): 114190132

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 582601, 1165202, 2330404, 2913005, 4078207, 5826010, 8156414, 11652020, 16312828, 20391035, 40782070, 81564140]

約数ペア:

[(1, 81564140), (2, 40782070), (4, 20391035), (5, 16312828), (7, 11652020), (10, 8156414), (14, 5826010), (20, 4078207), (28, 2913005), (35, 2330404), (70, 1165202), (140, 582601)]