19979988

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{237857}}^1$

素因数の和:237871

約数の個数: 24

約数和(自身を含む): 53280192

約数和(自身を除く): 33300204

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 237857, 475714, 713571, 951428, 1427142, 1664999, 2854284, 3329998, 4994997, 6659996, 9989994, 19979988]

約数ペア:

[(1, 19979988), (2, 9989994), (3, 6659996), (4, 4994997), (6, 3329998), (7, 2854284), (12, 1664999), (14, 1427142), (21, 951428), (28, 713571), (42, 475714), (84, 237857)]