205945090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{3931}}^1$

素因数の和:3995

約数の個数: 48

約数和(自身を含む): 414464256

約数和(自身を除く): 208519166

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 169, 310, 338, 403, 806, 845, 1690, 2015, 3931, 4030, 5239, 7862, 10478, 19655, 26195, 39310, 51103, 52390, 102206, 121861, 243722, 255515, 511030, 609305, 664339, 1218610, 1328678, 1584193, 3168386, 3321695, 6643390, 7920965, 15841930, 20594509, 41189018, 102972545, 205945090]

約数ペア:

[(1, 205945090), (2, 102972545), (5, 41189018), (10, 20594509), (13, 15841930), (26, 7920965), (31, 6643390), (62, 3321695), (65, 3168386), (130, 1584193), (155, 1328678), (169, 1218610), (310, 664339), (338, 609305), (403, 511030), (806, 255515), (845, 243722), (1690, 121861), (2015, 102206), (3931, 52390), (4030, 51103), (5239, 39310), (7862, 26195), (10478, 19655)]