40450000

素因数分解:

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

素因数の和:842

約数の個数: 60

約数和(自身を含む): 98079660

約数和(自身を除く): 57629660

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, 3125, 3236, 4045, 5000, 6250, 6472, 8090, 10000, 12500, 12944, 16180, 20225, 25000, 32360, 40450, 50000, 64720, 80900, 101125, 161800, 202250, 323600, 404500, 505625, 809000, 1011250, 1618000, 2022500, 2528125, 4045000, 5056250, 8090000, 10112500, 20225000, 40450000]

約数ペア:

[(1, 40450000), (2, 20225000), (4, 10112500), (5, 8090000), (8, 5056250), (10, 4045000), (16, 2528125), (20, 2022500), (25, 1618000), (40, 1011250), (50, 809000), (80, 505625), (100, 404500), (125, 323600), (200, 202250), (250, 161800), (400, 101125), (500, 80900), (625, 64720), (809, 50000), (1000, 40450), (1250, 32360), (1618, 25000), (2000, 20225), (2500, 16180), (3125, 12944), (3236, 12500), (4045, 10000), (5000, 8090), (6250, 6472)]