39936880

素因数分解:

$2^4\times 5^1\times {\mathrm{499211}}^1$

素因数の和:499224

約数の個数: 20

約数和(自身を含む): 92853432

約数和(自身を除く): 52916552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499211, 998422, 1996844, 2496055, 3993688, 4992110, 7987376, 9984220, 19968440, 39936880]

約数ペア:

[(1, 39936880), (2, 19968440), (4, 9984220), (5, 7987376), (8, 4992110), (10, 3993688), (16, 2496055), (20, 1996844), (40, 998422), (80, 499211)]