51379120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:542

約数の個数: 80

約数和(自身を含む): 129991680

約数和(自身を除く): 78612560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 127, 130, 208, 254, 260, 389, 508, 520, 635, 778, 1016, 1040, 1270, 1556, 1651, 1945, 2032, 2540, 3112, 3302, 3890, 5057, 5080, 6224, 6604, 7780, 8255, 10114, 10160, 13208, 15560, 16510, 20228, 25285, 26416, 31120, 33020, 40456, 49403, 50570, 66040, 80912, 98806, 101140, 132080, 197612, 202280, 247015, 395224, 404560, 494030, 642239, 790448, 988060, 1284478, 1976120, 2568956, 3211195, 3952240, 5137912, 6422390, 10275824, 12844780, 25689560, 51379120]

約数ペア:

[(1, 51379120), (2, 25689560), (4, 12844780), (5, 10275824), (8, 6422390), (10, 5137912), (13, 3952240), (16, 3211195), (20, 2568956), (26, 1976120), (40, 1284478), (52, 988060), (65, 790448), (80, 642239), (104, 494030), (127, 404560), (130, 395224), (208, 247015), (254, 202280), (260, 197612), (389, 132080), (508, 101140), (520, 98806), (635, 80912), (778, 66040), (1016, 50570), (1040, 49403), (1270, 40456), (1556, 33020), (1651, 31120), (1945, 26416), (2032, 25285), (2540, 20228), (3112, 16510), (3302, 15560), (3890, 13208), (5057, 10160), (5080, 10114), (6224, 8255), (6604, 7780)]