1091984

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:638

約数の個数: 20

約数和(自身を含む): 2135280

約数和(自身を除く): 1043296

約数列:

[1, 2, 4, 8, 16, 139, 278, 491, 556, 982, 1112, 1964, 2224, 3928, 7856, 68249, 136498, 272996, 545992, 1091984]

約数ペア:

[(1, 1091984), (2, 545992), (4, 272996), (8, 136498), (16, 68249), (139, 7856), (278, 3928), (491, 2224), (556, 1964), (982, 1112)]