18195940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{129971}}^1$

素因数の和:129987

約数の個数: 24

約数和(自身を含む): 43670592

約数和(自身を除く): 25474652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 129971, 259942, 519884, 649855, 909797, 1299710, 1819594, 2599420, 3639188, 4548985, 9097970, 18195940]

約数ペア:

[(1, 18195940), (2, 9097970), (4, 4548985), (5, 3639188), (7, 2599420), (10, 1819594), (14, 1299710), (20, 909797), (28, 649855), (35, 519884), (70, 259942), (140, 129971)]