505548290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{389}}^1\times {\mathrm{769}}^1$

素因数の和:1191

約数の個数: 48

約数和(自身を含む): 989188200

約数和(自身を除く): 483639910

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 389, 769, 778, 845, 1538, 1690, 1945, 3845, 3890, 5057, 7690, 9997, 10114, 19994, 25285, 49985, 50570, 65741, 99970, 129961, 131482, 259922, 299141, 328705, 598282, 649805, 657410, 1299610, 1495705, 2991410, 3888833, 7777666, 19444165, 38888330, 50554829, 101109658, 252774145, 505548290]

約数ペア:

[(1, 505548290), (2, 252774145), (5, 101109658), (10, 50554829), (13, 38888330), (26, 19444165), (65, 7777666), (130, 3888833), (169, 2991410), (338, 1495705), (389, 1299610), (769, 657410), (778, 649805), (845, 598282), (1538, 328705), (1690, 299141), (1945, 259922), (3845, 131482), (3890, 129961), (5057, 99970), (7690, 65741), (9997, 50570), (10114, 49985), (19994, 25285)]