865136

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:536

約数の個数: 20

約数和(自身を含む): 1692600

約数和(自身を除く): 827464

約数列:

[1, 2, 4, 8, 16, 139, 278, 389, 556, 778, 1112, 1556, 2224, 3112, 6224, 54071, 108142, 216284, 432568, 865136]

約数ペア:

[(1, 865136), (2, 432568), (4, 216284), (8, 108142), (16, 54071), (139, 6224), (278, 3112), (389, 2224), (556, 1556), (778, 1112)]