9940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1$

素因数の和:87

約数の個数: 24

約数和(自身を含む): 24192

約数和(自身を除く): 14252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940]

約数ペア:

[(1, 9940), (2, 4970), (4, 2485), (5, 1988), (7, 1420), (10, 994), (14, 710), (20, 497), (28, 355), (35, 284), (70, 142), (71, 140)]