12748240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8387}}^1$

素因数の和:8419

約数の個数: 40

約数和(自身を含む): 31203360

約数和(自身を除く): 18455120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 8387, 16774, 33548, 41935, 67096, 83870, 134192, 159353, 167740, 318706, 335480, 637412, 670960, 796765, 1274824, 1593530, 2549648, 3187060, 6374120, 12748240]

約数ペア:

[(1, 12748240), (2, 6374120), (4, 3187060), (5, 2549648), (8, 1593530), (10, 1274824), (16, 796765), (19, 670960), (20, 637412), (38, 335480), (40, 318706), (76, 167740), (80, 159353), (95, 134192), (152, 83870), (190, 67096), (304, 41935), (380, 33548), (760, 16774), (1520, 8387)]