20161980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37337}}^1$

素因数の和:37355

約数の個数: 48

約数和(自身を含む): 62727840

約数和(自身を除く): 42565860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 37337, 74674, 112011, 149348, 186685, 224022, 336033, 373370, 448044, 560055, 672066, 746740, 1008099, 1120110, 1344132, 1680165, 2016198, 2240220, 3360330, 4032396, 5040495, 6720660, 10080990, 20161980]

約数ペア:

[(1, 20161980), (2, 10080990), (3, 6720660), (4, 5040495), (5, 4032396), (6, 3360330), (9, 2240220), (10, 2016198), (12, 1680165), (15, 1344132), (18, 1120110), (20, 1008099), (27, 746740), (30, 672066), (36, 560055), (45, 448044), (54, 373370), (60, 336033), (90, 224022), (108, 186685), (135, 149348), (180, 112011), (270, 74674), (540, 37337)]