19720440

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{54779}}^1$

素因数の和:54796

約数の個数: 48

約数和(自身を含む): 64092600

約数和(自身を除く): 44372160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 54779, 109558, 164337, 219116, 273895, 328674, 438232, 493011, 547790, 657348, 821685, 986022, 1095580, 1314696, 1643370, 1972044, 2191160, 2465055, 3286740, 3944088, 4930110, 6573480, 9860220, 19720440]

約数ペア:

[(1, 19720440), (2, 9860220), (3, 6573480), (4, 4930110), (5, 3944088), (6, 3286740), (8, 2465055), (9, 2191160), (10, 1972044), (12, 1643370), (15, 1314696), (18, 1095580), (20, 986022), (24, 821685), (30, 657348), (36, 547790), (40, 493011), (45, 438232), (60, 328674), (72, 273895), (90, 219116), (120, 164337), (180, 109558), (360, 54779)]