172820020

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{63073}}^1$

素因数の和:63219

約数の個数: 24

約数和(自身を含む): 365576904

約数和(自身を除く): 192756884

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 63073, 126146, 252292, 315365, 630730, 1261460, 8641001, 17282002, 34564004, 43205005, 86410010, 172820020]

約数ペア:

[(1, 172820020), (2, 86410010), (4, 43205005), (5, 34564004), (10, 17282002), (20, 8641001), (137, 1261460), (274, 630730), (548, 315365), (685, 252292), (1370, 126146), (2740, 63073)]