1381940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{9871}}^1$

素因数の和:9887

約数の個数: 24

約数和(自身を含む): 3316992

約数和(自身を除く): 1935052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 9871, 19742, 39484, 49355, 69097, 98710, 138194, 197420, 276388, 345485, 690970, 1381940]

約数ペア:

[(1, 1381940), (2, 690970), (4, 345485), (5, 276388), (7, 197420), (10, 138194), (14, 98710), (20, 69097), (28, 49355), (35, 39484), (70, 19742), (140, 9871)]