20957616

素因数分解:

$2^4\times 3^4\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:280

約数の個数: 100

約数和(自身を含む): 61636432

約数和(自身を除く): 40678816

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 81, 103, 108, 144, 157, 162, 206, 216, 309, 314, 324, 412, 432, 471, 618, 628, 648, 824, 927, 942, 1236, 1256, 1296, 1413, 1648, 1854, 1884, 2472, 2512, 2781, 2826, 3708, 3768, 4239, 4944, 5562, 5652, 7416, 7536, 8343, 8478, 11124, 11304, 12717, 14832, 16171, 16686, 16956, 22248, 22608, 25434, 32342, 33372, 33912, 44496, 48513, 50868, 64684, 66744, 67824, 97026, 101736, 129368, 133488, 145539, 194052, 203472, 258736, 291078, 388104, 436617, 582156, 776208, 873234, 1164312, 1309851, 1746468, 2328624, 2619702, 3492936, 5239404, 6985872, 10478808, 20957616]

約数ペア:

[(1, 20957616), (2, 10478808), (3, 6985872), (4, 5239404), (6, 3492936), (8, 2619702), (9, 2328624), (12, 1746468), (16, 1309851), (18, 1164312), (24, 873234), (27, 776208), (36, 582156), (48, 436617), (54, 388104), (72, 291078), (81, 258736), (103, 203472), (108, 194052), (144, 145539), (157, 133488), (162, 129368), (206, 101736), (216, 97026), (309, 67824), (314, 66744), (324, 64684), (412, 50868), (432, 48513), (471, 44496), (618, 33912), (628, 33372), (648, 32342), (824, 25434), (927, 22608), (942, 22248), (1236, 16956), (1256, 16686), (1296, 16171), (1413, 14832), (1648, 12717), (1854, 11304), (1884, 11124), (2472, 8478), (2512, 8343), (2781, 7536), (2826, 7416), (3708, 5652), (3768, 5562), (4239, 4944)]