19717040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:414

約数の個数: 80

約数和(自身を含む): 52978752

約数和(自身を除く): 33261712

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 137, 140, 257, 274, 280, 514, 548, 560, 685, 959, 1028, 1096, 1285, 1370, 1799, 1918, 2056, 2192, 2570, 2740, 3598, 3836, 4112, 4795, 5140, 5480, 7196, 7672, 8995, 9590, 10280, 10960, 14392, 15344, 17990, 19180, 20560, 28784, 35209, 35980, 38360, 70418, 71960, 76720, 140836, 143920, 176045, 246463, 281672, 352090, 492926, 563344, 704180, 985852, 1232315, 1408360, 1971704, 2464630, 2816720, 3943408, 4929260, 9858520, 19717040]

約数ペア:

[(1, 19717040), (2, 9858520), (4, 4929260), (5, 3943408), (7, 2816720), (8, 2464630), (10, 1971704), (14, 1408360), (16, 1232315), (20, 985852), (28, 704180), (35, 563344), (40, 492926), (56, 352090), (70, 281672), (80, 246463), (112, 176045), (137, 143920), (140, 140836), (257, 76720), (274, 71960), (280, 70418), (514, 38360), (548, 35980), (560, 35209), (685, 28784), (959, 20560), (1028, 19180), (1096, 17990), (1285, 15344), (1370, 14392), (1799, 10960), (1918, 10280), (2056, 9590), (2192, 8995), (2570, 7672), (2740, 7196), (3598, 5480), (3836, 5140), (4112, 4795)]