80560400

素因数分解:

$2^4\times 5^2\times {\mathrm{201401}}^1$

素因数の和:201419

約数の個数: 30

約数和(自身を含む): 193547322

約数和(自身を除く): 112986922

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 201401, 402802, 805604, 1007005, 1611208, 2014010, 3222416, 4028020, 5035025, 8056040, 10070050, 16112080, 20140100, 40280200, 80560400]

約数ペア:

[(1, 80560400), (2, 40280200), (4, 20140100), (5, 16112080), (8, 10070050), (10, 8056040), (16, 5035025), (20, 4028020), (25, 3222416), (40, 2014010), (50, 1611208), (80, 1007005), (100, 805604), (200, 402802), (400, 201401)]