20281707940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78006569}}^1$

素因数の和:78006591

約数の個数: 24

約数和(自身を含む): 45867863160

約数和(自身を除く): 25586155220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78006569, 156013138, 312026276, 390032845, 780065690, 1014085397, 1560131380, 2028170794, 4056341588, 5070426985, 10140853970, 20281707940]

約数ペア:

[(1, 20281707940), (2, 10140853970), (4, 5070426985), (5, 4056341588), (10, 2028170794), (13, 1560131380), (20, 1014085397), (26, 780065690), (52, 390032845), (65, 312026276), (130, 156013138), (260, 78006569)]