20216187940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77754569}}^1$

素因数の和:77754591

約数の個数: 24

約数和(自身を含む): 45719687160

約数和(自身を除く): 25503499220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77754569, 155509138, 311018276, 388772845, 777545690, 1010809397, 1555091380, 2021618794, 4043237588, 5054046985, 10108093970, 20216187940]

約数ペア:

[(1, 20216187940), (2, 10108093970), (4, 5054046985), (5, 4043237588), (10, 2021618794), (13, 1555091380), (20, 1010809397), (26, 777545690), (52, 388772845), (65, 311018276), (130, 155509138), (260, 77754569)]