80998700

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{10253}}^1$

素因数の和:10346

約数の個数: 36

約数和(自身を含む): 178009440

約数和(自身を除く): 97010740

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900, 10253, 20506, 41012, 51265, 102530, 205060, 256325, 512650, 809987, 1025300, 1619974, 3239948, 4049935, 8099870, 16199740, 20249675, 40499350, 80998700]

約数ペア:

[(1, 80998700), (2, 40499350), (4, 20249675), (5, 16199740), (10, 8099870), (20, 4049935), (25, 3239948), (50, 1619974), (79, 1025300), (100, 809987), (158, 512650), (316, 256325), (395, 205060), (790, 102530), (1580, 51265), (1975, 41012), (3950, 20506), (7900, 10253)]