21871052

素因数分解:

$2^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{839}}^1$

素因数の和:883

約数の個数: 48

約数和(自身を含む): 47040000

約数和(自身を除く): 25168948

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 133, 196, 266, 343, 532, 686, 839, 931, 1372, 1678, 1862, 3356, 3724, 5873, 6517, 11746, 13034, 15941, 23492, 26068, 31882, 41111, 63764, 82222, 111587, 164444, 223174, 287777, 446348, 575554, 781109, 1151108, 1562218, 3124436, 5467763, 10935526, 21871052]

約数ペア:

[(1, 21871052), (2, 10935526), (4, 5467763), (7, 3124436), (14, 1562218), (19, 1151108), (28, 781109), (38, 575554), (49, 446348), (76, 287777), (98, 223174), (133, 164444), (196, 111587), (266, 82222), (343, 63764), (532, 41111), (686, 31882), (839, 26068), (931, 23492), (1372, 15941), (1678, 13034), (1862, 11746), (3356, 6517), (3724, 5873)]