28800400

素因数分解:

$2^4\times 5^2\times {\mathrm{89}}^1\times {\mathrm{809}}^1$

素因数の和:916

約数の個数: 60

約数和(自身を含む): 70056900

約数和(自身を除く): 41256500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 89, 100, 178, 200, 356, 400, 445, 712, 809, 890, 1424, 1618, 1780, 2225, 3236, 3560, 4045, 4450, 6472, 7120, 8090, 8900, 12944, 16180, 17800, 20225, 32360, 35600, 40450, 64720, 72001, 80900, 144002, 161800, 288004, 323600, 360005, 576008, 720010, 1152016, 1440020, 1800025, 2880040, 3600050, 5760080, 7200100, 14400200, 28800400]

約数ペア:

[(1, 28800400), (2, 14400200), (4, 7200100), (5, 5760080), (8, 3600050), (10, 2880040), (16, 1800025), (20, 1440020), (25, 1152016), (40, 720010), (50, 576008), (80, 360005), (89, 323600), (100, 288004), (178, 161800), (200, 144002), (356, 80900), (400, 72001), (445, 64720), (712, 40450), (809, 35600), (890, 32360), (1424, 20225), (1618, 17800), (1780, 16180), (2225, 12944), (3236, 8900), (3560, 8090), (4045, 7120), (4450, 6472)]