20514760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1787}}^1$

素因数の和:1846

約数の個数: 64

約数和(自身を含む): 54069120

約数和(自身を除く): 33554360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1640, 1787, 2296, 2870, 3574, 5740, 7148, 8935, 11480, 12509, 14296, 17870, 25018, 35740, 50036, 62545, 71480, 73267, 100072, 125090, 146534, 250180, 293068, 366335, 500360, 512869, 586136, 732670, 1025738, 1465340, 2051476, 2564345, 2930680, 4102952, 5128690, 10257380, 20514760]

約数ペア:

[(1, 20514760), (2, 10257380), (4, 5128690), (5, 4102952), (7, 2930680), (8, 2564345), (10, 2051476), (14, 1465340), (20, 1025738), (28, 732670), (35, 586136), (40, 512869), (41, 500360), (56, 366335), (70, 293068), (82, 250180), (140, 146534), (164, 125090), (205, 100072), (280, 73267), (287, 71480), (328, 62545), (410, 50036), (574, 35740), (820, 25018), (1148, 17870), (1435, 14296), (1640, 12509), (1787, 11480), (2296, 8935), (2870, 7148), (3574, 5740)]