8090000

素因数分解:

$2^4\times 5^4\times {\mathrm{809}}^1$

素因数の和:837

約数の個数: 50

約数和(自身を含む): 19610910

約数和(自身を除く): 11520910

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 809, 1000, 1250, 1618, 2000, 2500, 3236, 4045, 5000, 6472, 8090, 10000, 12944, 16180, 20225, 32360, 40450, 64720, 80900, 101125, 161800, 202250, 323600, 404500, 505625, 809000, 1011250, 1618000, 2022500, 4045000, 8090000]

約数ペア:

[(1, 8090000), (2, 4045000), (4, 2022500), (5, 1618000), (8, 1011250), (10, 809000), (16, 505625), (20, 404500), (25, 323600), (40, 202250), (50, 161800), (80, 101125), (100, 80900), (125, 64720), (200, 40450), (250, 32360), (400, 20225), (500, 16180), (625, 12944), (809, 10000), (1000, 8090), (1250, 6472), (1618, 5000), (2000, 4045), (2500, 3236)]