261940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1871}}^1$

素因数の和:1887

約数の個数: 24

約数和(自身を含む): 628992

約数和(自身を除く): 367052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1871, 3742, 7484, 9355, 13097, 18710, 26194, 37420, 52388, 65485, 130970, 261940]

約数ペア:

[(1, 261940), (2, 130970), (4, 65485), (5, 52388), (7, 37420), (10, 26194), (14, 18710), (20, 13097), (28, 9355), (35, 7484), (70, 3742), (140, 1871)]