638652728

素因数分解:

$2^3\times 7^1\times {\mathrm{11404513}}^1$

素因数の和:11404526

約数の個数: 16

約数和(自身を含む): 1368541680

約数和(自身を除く): 729888952

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 11404513, 22809026, 45618052, 79831591, 91236104, 159663182, 319326364, 638652728]

約数ペア:

[(1, 638652728), (2, 319326364), (4, 159663182), (7, 91236104), (8, 79831591), (14, 45618052), (28, 22809026), (56, 11404513)]