20641218556

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{435947}}^1$

素因数の和:436066

約数の個数: 48

約数和(自身を含む): 43943558400

約数和(自身を除く): 23302339844

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 89, 133, 178, 266, 356, 532, 623, 1246, 1691, 2492, 3382, 6764, 11837, 23674, 47348, 435947, 871894, 1743788, 3051629, 6103258, 8282993, 12206516, 16565986, 33131972, 38799283, 57980951, 77598566, 115961902, 155197132, 231923804, 271594981, 543189962, 737186377, 1086379924, 1474372754, 2948745508, 5160304639, 10320609278, 20641218556]

約数ペア:

[(1, 20641218556), (2, 10320609278), (4, 5160304639), (7, 2948745508), (14, 1474372754), (19, 1086379924), (28, 737186377), (38, 543189962), (76, 271594981), (89, 231923804), (133, 155197132), (178, 115961902), (266, 77598566), (356, 57980951), (532, 38799283), (623, 33131972), (1246, 16565986), (1691, 12206516), (2492, 8282993), (3382, 6103258), (6764, 3051629), (11837, 1743788), (23674, 871894), (47348, 435947)]