20814400

素因数分解:

$2^6\times 5^2\times {\mathrm{13009}}^1$

素因数の和:13031

約数の個数: 42

約数和(自身を含む): 51220370

約数和(自身を除く): 30405970

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 13009, 26018, 52036, 65045, 104072, 130090, 208144, 260180, 325225, 416288, 520360, 650450, 832576, 1040720, 1300900, 2081440, 2601800, 4162880, 5203600, 10407200, 20814400]

約数ペア:

[(1, 20814400), (2, 10407200), (4, 5203600), (5, 4162880), (8, 2601800), (10, 2081440), (16, 1300900), (20, 1040720), (25, 832576), (32, 650450), (40, 520360), (50, 416288), (64, 325225), (80, 260180), (100, 208144), (160, 130090), (200, 104072), (320, 65045), (400, 52036), (800, 26018), (1600, 13009)]