21721448

素因数分解:

$2^3\times 7^1\times {\mathrm{181}}^1\times {\mathrm{2143}}^1$

素因数の和:2337

約数の個数: 32

約数和(自身を含む): 46824960

約数和(自身を除く): 25103512

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 181, 362, 724, 1267, 1448, 2143, 2534, 4286, 5068, 8572, 10136, 15001, 17144, 30002, 60004, 120008, 387883, 775766, 1551532, 2715181, 3103064, 5430362, 10860724, 21721448]

約数ペア:

[(1, 21721448), (2, 10860724), (4, 5430362), (7, 3103064), (8, 2715181), (14, 1551532), (28, 775766), (56, 387883), (181, 120008), (362, 60004), (724, 30002), (1267, 17144), (1448, 15001), (2143, 10136), (2534, 8572), (4286, 5068)]