210004000

素因数分解:

$2^5\times 5^3\times {\mathrm{52501}}^1$

素因数の和:52526

約数の個数: 48

約数和(自身を含む): 515989656

約数和(自身を除く): 305985656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 52501, 105002, 210004, 262505, 420008, 525010, 840016, 1050020, 1312525, 1680032, 2100040, 2625050, 4200080, 5250100, 6562625, 8400160, 10500200, 13125250, 21000400, 26250500, 42000800, 52501000, 105002000, 210004000]

約数ペア:

[(1, 210004000), (2, 105002000), (4, 52501000), (5, 42000800), (8, 26250500), (10, 21000400), (16, 13125250), (20, 10500200), (25, 8400160), (32, 6562625), (40, 5250100), (50, 4200080), (80, 2625050), (100, 2100040), (125, 1680032), (160, 1312525), (200, 1050020), (250, 840016), (400, 525010), (500, 420008), (800, 262505), (1000, 210004), (2000, 105002), (4000, 52501)]