19780544

素因数分解:

$2^6\times 7^1\times {\mathrm{67}}^1\times {\mathrm{659}}^1$

素因数の和:745

約数の個数: 56

約数和(自身を含む): 45598080

約数和(自身を除く): 25817536

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 67, 112, 134, 224, 268, 448, 469, 536, 659, 938, 1072, 1318, 1876, 2144, 2636, 3752, 4288, 4613, 5272, 7504, 9226, 10544, 15008, 18452, 21088, 30016, 36904, 42176, 44153, 73808, 88306, 147616, 176612, 295232, 309071, 353224, 618142, 706448, 1236284, 1412896, 2472568, 2825792, 4945136, 9890272, 19780544]

約数ペア:

[(1, 19780544), (2, 9890272), (4, 4945136), (7, 2825792), (8, 2472568), (14, 1412896), (16, 1236284), (28, 706448), (32, 618142), (56, 353224), (64, 309071), (67, 295232), (112, 176612), (134, 147616), (224, 88306), (268, 73808), (448, 44153), (469, 42176), (536, 36904), (659, 30016), (938, 21088), (1072, 18452), (1318, 15008), (1876, 10544), (2144, 9226), (2636, 7504), (3752, 5272), (4288, 4613)]