20286960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{617}}^1$

素因数の和:770

約数の個数: 80

約数和(自身を含む): 63451296

約数和(自身を除く): 43164336

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 137, 240, 274, 411, 548, 617, 685, 822, 1096, 1234, 1370, 1644, 1851, 2055, 2192, 2468, 2740, 3085, 3288, 3702, 4110, 4936, 5480, 6170, 6576, 7404, 8220, 9255, 9872, 10960, 12340, 14808, 16440, 18510, 24680, 29616, 32880, 37020, 49360, 74040, 84529, 148080, 169058, 253587, 338116, 422645, 507174, 676232, 845290, 1014348, 1267935, 1352464, 1690580, 2028696, 2535870, 3381160, 4057392, 5071740, 6762320, 10143480, 20286960]

約数ペア:

[(1, 20286960), (2, 10143480), (3, 6762320), (4, 5071740), (5, 4057392), (6, 3381160), (8, 2535870), (10, 2028696), (12, 1690580), (15, 1352464), (16, 1267935), (20, 1014348), (24, 845290), (30, 676232), (40, 507174), (48, 422645), (60, 338116), (80, 253587), (120, 169058), (137, 148080), (240, 84529), (274, 74040), (411, 49360), (548, 37020), (617, 32880), (685, 29616), (822, 24680), (1096, 18510), (1234, 16440), (1370, 14808), (1644, 12340), (1851, 10960), (2055, 9872), (2192, 9255), (2468, 8220), (2740, 7404), (3085, 6576), (3288, 6170), (3702, 5480), (4110, 4936)]