20769287

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:180

約数の個数: 36

約数和(自身を含む): 27655488

約数和(自身を除く): 6886201

約数列:

[1, 7, 11, 31, 49, 77, 113, 121, 217, 341, 539, 791, 847, 1243, 1519, 2387, 3503, 3751, 5537, 5929, 8701, 13673, 16709, 24521, 26257, 38533, 60907, 95711, 171647, 183799, 269731, 423863, 669977, 1888117, 2967041, 20769287]

約数ペア:

[(1, 20769287), (7, 2967041), (11, 1888117), (31, 669977), (49, 423863), (77, 269731), (113, 183799), (121, 171647), (217, 95711), (341, 60907), (539, 38533), (791, 26257), (847, 24521), (1243, 16709), (1519, 13673), (2387, 8701), (3503, 5929), (3751, 5537)]