20513640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24421}}^1$

素因数の和:24442

約数の個数: 64

約数和(自身を含む): 70335360

約数和(自身を除く): 49821720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24421, 48842, 73263, 97684, 122105, 146526, 170947, 195368, 244210, 293052, 341894, 366315, 488420, 512841, 586104, 683788, 732630, 854735, 976840, 1025682, 1367576, 1465260, 1709470, 2051364, 2564205, 2930520, 3418940, 4102728, 5128410, 6837880, 10256820, 20513640]

約数ペア:

[(1, 20513640), (2, 10256820), (3, 6837880), (4, 5128410), (5, 4102728), (6, 3418940), (7, 2930520), (8, 2564205), (10, 2051364), (12, 1709470), (14, 1465260), (15, 1367576), (20, 1025682), (21, 976840), (24, 854735), (28, 732630), (30, 683788), (35, 586104), (40, 512841), (42, 488420), (56, 366315), (60, 341894), (70, 293052), (84, 244210), (105, 195368), (120, 170947), (140, 146526), (168, 122105), (210, 97684), (280, 73263), (420, 48842), (840, 24421)]