200912420

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{50993}}^1$

素因数の和:51199

約数の個数: 24

約数和(自身を含む): 424066104

約数和(自身を除く): 223153684

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 50993, 101986, 203972, 254965, 509930, 1019860, 10045621, 20091242, 40182484, 50228105, 100456210, 200912420]

約数ペア:

[(1, 200912420), (2, 100456210), (4, 50228105), (5, 40182484), (10, 20091242), (20, 10045621), (197, 1019860), (394, 509930), (788, 254965), (985, 203972), (1970, 101986), (3940, 50993)]