20199976780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{934319}}^1$

素因数の和:934398

約数の個数: 48

約数和(自身を含む): 45206138880

約数和(自身を除く): 25006162100

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 47, 92, 94, 115, 188, 230, 235, 460, 470, 940, 1081, 2162, 4324, 5405, 10810, 21620, 934319, 1868638, 3737276, 4671595, 9343190, 18686380, 21489337, 42978674, 43912993, 85957348, 87825986, 107446685, 175651972, 214893370, 219564965, 429786740, 439129930, 878259860, 1009998839, 2019997678, 4039995356, 5049994195, 10099988390, 20199976780]

約数ペア:

[(1, 20199976780), (2, 10099988390), (4, 5049994195), (5, 4039995356), (10, 2019997678), (20, 1009998839), (23, 878259860), (46, 439129930), (47, 429786740), (92, 219564965), (94, 214893370), (115, 175651972), (188, 107446685), (230, 87825986), (235, 85957348), (460, 43912993), (470, 42978674), (940, 21489337), (1081, 18686380), (2162, 9343190), (4324, 4671595), (5405, 3737276), (10810, 1868638), (21620, 934319)]