128821912

素因数分解:

$2^3\times {\mathrm{409}}^1\times {\mathrm{39371}}^1$

素因数の和:39786

約数の個数: 16

約数和(自身を含む): 242137800

約数和(自身を除く): 113315888

約数列:

[1, 2, 4, 8, 409, 818, 1636, 3272, 39371, 78742, 157484, 314968, 16102739, 32205478, 64410956, 128821912]

約数ペア:

[(1, 128821912), (2, 64410956), (4, 32205478), (8, 16102739), (409, 314968), (818, 157484), (1636, 78742), (3272, 39371)]