21680912

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2621}}^1$

素因数の和:2687

約数の個数: 40

約数和(自身を含む): 46818432

約数和(自身を除く): 25137520

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 47, 88, 94, 176, 188, 376, 517, 752, 1034, 2068, 2621, 4136, 5242, 8272, 10484, 20968, 28831, 41936, 57662, 115324, 123187, 230648, 246374, 461296, 492748, 985496, 1355057, 1970992, 2710114, 5420228, 10840456, 21680912]

約数ペア:

[(1, 21680912), (2, 10840456), (4, 5420228), (8, 2710114), (11, 1970992), (16, 1355057), (22, 985496), (44, 492748), (47, 461296), (88, 246374), (94, 230648), (176, 123187), (188, 115324), (376, 57662), (517, 41936), (752, 28831), (1034, 20968), (2068, 10484), (2621, 8272), (4136, 5242)]