20899000

素因数分解:

$2^3\times 5^3\times {\mathrm{20899}}^1$

素因数の和:20920

約数の個数: 32

約数和(自身を含む): 48906000

約数和(自身を除く): 28007000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 20899, 41798, 83596, 104495, 167192, 208990, 417980, 522475, 835960, 1044950, 2089900, 2612375, 4179800, 5224750, 10449500, 20899000]

約数ペア:

[(1, 20899000), (2, 10449500), (4, 5224750), (5, 4179800), (8, 2612375), (10, 2089900), (20, 1044950), (25, 835960), (40, 522475), (50, 417980), (100, 208990), (125, 167192), (200, 104495), (250, 83596), (500, 41798), (1000, 20899)]