20637080

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{5009}}^1$

素因数の和:5123

約数の個数: 32

約数和(自身を含む): 46893600

約数和(自身を除く): 26256520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 5009, 10018, 20036, 25045, 40072, 50090, 100180, 200360, 515927, 1031854, 2063708, 2579635, 4127416, 5159270, 10318540, 20637080]

約数ペア:

[(1, 20637080), (2, 10318540), (4, 5159270), (5, 4127416), (8, 2579635), (10, 2063708), (20, 1031854), (40, 515927), (103, 200360), (206, 100180), (412, 50090), (515, 40072), (824, 25045), (1030, 20036), (2060, 10018), (4120, 5009)]