20745872

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{9749}}^1$

素因数の和:9783

約数の個数: 40

約数和(自身を含む): 48360000

約数和(自身を除く): 27614128

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 9749, 19498, 38996, 68243, 77992, 136486, 155984, 185231, 272972, 370462, 545944, 740924, 1091888, 1296617, 1481848, 2593234, 2963696, 5186468, 10372936, 20745872]

約数ペア:

[(1, 20745872), (2, 10372936), (4, 5186468), (7, 2963696), (8, 2593234), (14, 1481848), (16, 1296617), (19, 1091888), (28, 740924), (38, 545944), (56, 370462), (76, 272972), (112, 185231), (133, 155984), (152, 136486), (266, 77992), (304, 68243), (532, 38996), (1064, 19498), (2128, 9749)]