18878888

素因数分解:

$2^3\times 7^1\times {\mathrm{443}}^1\times {\mathrm{761}}^1$

素因数の和:1217

約数の個数: 32

約数和(自身を含む): 40599360

約数和(自身を除く): 21720472

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 443, 761, 886, 1522, 1772, 3044, 3101, 3544, 5327, 6088, 6202, 10654, 12404, 21308, 24808, 42616, 337123, 674246, 1348492, 2359861, 2696984, 4719722, 9439444, 18878888]

約数ペア:

[(1, 18878888), (2, 9439444), (4, 4719722), (7, 2696984), (8, 2359861), (14, 1348492), (28, 674246), (56, 337123), (443, 42616), (761, 24808), (886, 21308), (1522, 12404), (1772, 10654), (3044, 6202), (3101, 6088), (3544, 5327)]