127984

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:448

約数の個数: 20

約数和(自身を含む): 261640

約数和(自身を除く): 133656

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 421, 842, 1684, 3368, 6736, 7999, 15998, 31996, 63992, 127984]

約数ペア:

[(1, 127984), (2, 63992), (4, 31996), (8, 15998), (16, 7999), (19, 6736), (38, 3368), (76, 1684), (152, 842), (304, 421)]