79940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{571}}^1$

素因数の和:587

約数の個数: 24

約数和(自身を含む): 192192

約数和(自身を除く): 112252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 571, 1142, 2284, 2855, 3997, 5710, 7994, 11420, 15988, 19985, 39970, 79940]

約数ペア:

[(1, 79940), (2, 39970), (4, 19985), (5, 15988), (7, 11420), (10, 7994), (14, 5710), (20, 3997), (28, 2855), (35, 2284), (70, 1142), (140, 571)]