205960720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{52541}}^1$

素因数の和:52568

約数の個数: 60

約数和(自身を含む): 557050284

約数和(自身を除く): 351089564

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 52541, 105082, 210164, 262705, 367787, 420328, 525410, 735574, 840656, 1050820, 1471148, 1838935, 2101640, 2574509, 2942296, 3677870, 4203280, 5149018, 5884592, 7355740, 10298036, 12872545, 14711480, 20596072, 25745090, 29422960, 41192144, 51490180, 102980360, 205960720]

約数ペア:

[(1, 205960720), (2, 102980360), (4, 51490180), (5, 41192144), (7, 29422960), (8, 25745090), (10, 20596072), (14, 14711480), (16, 12872545), (20, 10298036), (28, 7355740), (35, 5884592), (40, 5149018), (49, 4203280), (56, 3677870), (70, 2942296), (80, 2574509), (98, 2101640), (112, 1838935), (140, 1471148), (196, 1050820), (245, 840656), (280, 735574), (392, 525410), (490, 420328), (560, 367787), (784, 262705), (980, 210164), (1960, 105082), (3920, 52541)]