21261856

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{8629}}^1$

素因数の和:8657

約数の個数: 48

約数和(自身を含む): 52194240

約数和(自身を除く): 30932384

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 77, 88, 112, 154, 176, 224, 308, 352, 616, 1232, 2464, 8629, 17258, 34516, 60403, 69032, 94919, 120806, 138064, 189838, 241612, 276128, 379676, 483224, 664433, 759352, 966448, 1328866, 1518704, 1932896, 2657732, 3037408, 5315464, 10630928, 21261856]

約数ペア:

[(1, 21261856), (2, 10630928), (4, 5315464), (7, 3037408), (8, 2657732), (11, 1932896), (14, 1518704), (16, 1328866), (22, 966448), (28, 759352), (32, 664433), (44, 483224), (56, 379676), (77, 276128), (88, 241612), (112, 189838), (154, 138064), (176, 120806), (224, 94919), (308, 69032), (352, 60403), (616, 34516), (1232, 17258), (2464, 8629)]