21483952

素因数分解:

$2^4\times 7^2\times {\mathrm{67}}^1\times {\mathrm{409}}^1$

素因数の和:498

約数の個数: 60

約数和(自身を含む): 49263960

約数和(自身を除く): 27780008

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 67, 98, 112, 134, 196, 268, 392, 409, 469, 536, 784, 818, 938, 1072, 1636, 1876, 2863, 3272, 3283, 3752, 5726, 6544, 6566, 7504, 11452, 13132, 20041, 22904, 26264, 27403, 40082, 45808, 52528, 54806, 80164, 109612, 160328, 191821, 219224, 320656, 383642, 438448, 767284, 1342747, 1534568, 2685494, 3069136, 5370988, 10741976, 21483952]

約数ペア:

[(1, 21483952), (2, 10741976), (4, 5370988), (7, 3069136), (8, 2685494), (14, 1534568), (16, 1342747), (28, 767284), (49, 438448), (56, 383642), (67, 320656), (98, 219224), (112, 191821), (134, 160328), (196, 109612), (268, 80164), (392, 54806), (409, 52528), (469, 45808), (536, 40082), (784, 27403), (818, 26264), (938, 22904), (1072, 20041), (1636, 13132), (1876, 11452), (2863, 7504), (3272, 6566), (3283, 6544), (3752, 5726)]