20681220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1201}}^1$

素因数の和:1261

約数の個数: 96

約数和(自身を含む): 67850496

約数和(自身を除く): 47169276

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 41, 42, 60, 70, 82, 84, 105, 123, 140, 164, 205, 210, 246, 287, 410, 420, 492, 574, 615, 820, 861, 1148, 1201, 1230, 1435, 1722, 2402, 2460, 2870, 3444, 3603, 4305, 4804, 5740, 6005, 7206, 8407, 8610, 12010, 14412, 16814, 17220, 18015, 24020, 25221, 33628, 36030, 42035, 49241, 50442, 72060, 84070, 98482, 100884, 126105, 147723, 168140, 196964, 246205, 252210, 295446, 344687, 492410, 504420, 590892, 689374, 738615, 984820, 1034061, 1378748, 1477230, 1723435, 2068122, 2954460, 3446870, 4136244, 5170305, 6893740, 10340610, 20681220]

約数ペア:

[(1, 20681220), (2, 10340610), (3, 6893740), (4, 5170305), (5, 4136244), (6, 3446870), (7, 2954460), (10, 2068122), (12, 1723435), (14, 1477230), (15, 1378748), (20, 1034061), (21, 984820), (28, 738615), (30, 689374), (35, 590892), (41, 504420), (42, 492410), (60, 344687), (70, 295446), (82, 252210), (84, 246205), (105, 196964), (123, 168140), (140, 147723), (164, 126105), (205, 100884), (210, 98482), (246, 84070), (287, 72060), (410, 50442), (420, 49241), (492, 42035), (574, 36030), (615, 33628), (820, 25221), (861, 24020), (1148, 18015), (1201, 17220), (1230, 16814), (1435, 14412), (1722, 12010), (2402, 8610), (2460, 8407), (2870, 7206), (3444, 6005), (3603, 5740), (4305, 4804)]