4045000

素因数分解:

$2^3\times 5^4\times {\mathrm{809}}^1$

素因数の和:835

約数の個数: 40

約数和(自身を含む): 9489150

約数和(自身を除く): 5444150

約数列:

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

約数ペア:

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