78404900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{16001}}^1$

素因数の和:16029

約数の個数: 54

約数和(自身を含む): 197928738

約数和(自身を除く): 119523838

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4900, 16001, 32002, 64004, 80005, 112007, 160010, 224014, 320020, 400025, 448028, 560035, 784049, 800050, 1120070, 1568098, 1600100, 2240140, 2800175, 3136196, 3920245, 5600350, 7840490, 11200700, 15680980, 19601225, 39202450, 78404900]

約数ペア:

[(1, 78404900), (2, 39202450), (4, 19601225), (5, 15680980), (7, 11200700), (10, 7840490), (14, 5600350), (20, 3920245), (25, 3136196), (28, 2800175), (35, 2240140), (49, 1600100), (50, 1568098), (70, 1120070), (98, 800050), (100, 784049), (140, 560035), (175, 448028), (196, 400025), (245, 320020), (350, 224014), (490, 160010), (700, 112007), (980, 80005), (1225, 64004), (2450, 32002), (4900, 16001)]