28657916

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^2\times {\mathrm{1217}}^1$

素因数の和:1286

約数の個数: 36

約数和(自身を含む): 59409168

約数和(自身を除く): 30751252

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812, 841, 1217, 1682, 2434, 3364, 4868, 5887, 8519, 11774, 17038, 23548, 34076, 35293, 70586, 141172, 247051, 494102, 988204, 1023497, 2046994, 4093988, 7164479, 14328958, 28657916]

約数ペア:

[(1, 28657916), (2, 14328958), (4, 7164479), (7, 4093988), (14, 2046994), (28, 1023497), (29, 988204), (58, 494102), (116, 247051), (203, 141172), (406, 70586), (812, 35293), (841, 34076), (1217, 23548), (1682, 17038), (2434, 11774), (3364, 8519), (4868, 5887)]