20719888

素因数分解:

$2^4\times 7^1\times {\mathrm{184999}}^1$

素因数の和:185014

約数の個数: 20

約数和(自身を含む): 45880000

約数和(自身を除く): 25160112

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 184999, 369998, 739996, 1294993, 1479992, 2589986, 2959984, 5179972, 10359944, 20719888]

約数ペア:

[(1, 20719888), (2, 10359944), (4, 5179972), (7, 2959984), (8, 2589986), (14, 1479992), (16, 1294993), (28, 739996), (56, 369998), (112, 184999)]