20128735880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45747127}}^1$

素因数の和:45747149

約数の個数: 32

約数和(自身を含む): 49406898240

約数和(自身を除く): 29278162360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45747127, 91494254, 182988508, 228735635, 365977016, 457471270, 503218397, 914942540, 1006436794, 1829885080, 2012873588, 2516091985, 4025747176, 5032183970, 10064367940, 20128735880]

約数ペア:

[(1, 20128735880), (2, 10064367940), (4, 5032183970), (5, 4025747176), (8, 2516091985), (10, 2012873588), (11, 1829885080), (20, 1006436794), (22, 914942540), (40, 503218397), (44, 457471270), (55, 365977016), (88, 228735635), (110, 182988508), (220, 91494254), (440, 45747127)]