16180000

素因数分解:

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

素因数の和:839

約数の個数: 60

約数和(自身を含む): 39854430

約数和(自身を除く): 23674430

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 809, 1000, 1250, 1618, 2000, 2500, 3236, 4000, 4045, 5000, 6472, 8090, 10000, 12944, 16180, 20000, 20225, 25888, 32360, 40450, 64720, 80900, 101125, 129440, 161800, 202250, 323600, 404500, 505625, 647200, 809000, 1011250, 1618000, 2022500, 3236000, 4045000, 8090000, 16180000]

約数ペア:

[(1, 16180000), (2, 8090000), (4, 4045000), (5, 3236000), (8, 2022500), (10, 1618000), (16, 1011250), (20, 809000), (25, 647200), (32, 505625), (40, 404500), (50, 323600), (80, 202250), (100, 161800), (125, 129440), (160, 101125), (200, 80900), (250, 64720), (400, 40450), (500, 32360), (625, 25888), (800, 20225), (809, 20000), (1000, 16180), (1250, 12944), (1618, 10000), (2000, 8090), (2500, 6472), (3236, 5000), (4000, 4045)]