21600400

素因数分解:

$2^4\times 5^2\times {\mathrm{54001}}^1$

素因数の和:54019

約数の個数: 30

約数和(自身を含む): 51895922

約数和(自身を除く): 30295522

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 54001, 108002, 216004, 270005, 432008, 540010, 864016, 1080020, 1350025, 2160040, 2700050, 4320080, 5400100, 10800200, 21600400]

約数ペア:

[(1, 21600400), (2, 10800200), (4, 5400100), (5, 4320080), (8, 2700050), (10, 2160040), (16, 1350025), (20, 1080020), (25, 864016), (40, 540010), (50, 432008), (80, 270005), (100, 216004), (200, 108002), (400, 54001)]