839860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{857}}^1$

素因数の和:880

約数の個数: 36

約数和(自身を含む): 2054052

約数和(自身を除く): 1214192

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 857, 980, 1714, 3428, 4285, 5999, 8570, 11998, 17140, 23996, 29995, 41993, 59990, 83986, 119980, 167972, 209965, 419930, 839860]

約数ペア:

[(1, 839860), (2, 419930), (4, 209965), (5, 167972), (7, 119980), (10, 83986), (14, 59990), (20, 41993), (28, 29995), (35, 23996), (49, 17140), (70, 11998), (98, 8570), (140, 5999), (196, 4285), (245, 3428), (490, 1714), (857, 980)]