20147988

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{239857}}^1$

素因数の和:239871

約数の個数: 24

約数和(自身を含む): 53728192

約数和(自身を除く): 33580204

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 239857, 479714, 719571, 959428, 1439142, 1678999, 2878284, 3357998, 5036997, 6715996, 10073994, 20147988]

約数ペア:

[(1, 20147988), (2, 10073994), (3, 6715996), (4, 5036997), (6, 3357998), (7, 2878284), (12, 1678999), (14, 1439142), (21, 959428), (28, 719571), (42, 479714), (84, 239857)]