128886265

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 169361280

約数和(自身を除く): 40475015

約数列:

[1, 5, 17, 43, 85, 179, 197, 215, 731, 895, 985, 3043, 3349, 3655, 7697, 8471, 15215, 16745, 35263, 38485, 42355, 130849, 144007, 176315, 599471, 654245, 720035, 1516309, 2997355, 7581545, 25777253, 128886265]

約数ペア:

[(1, 128886265), (5, 25777253), (17, 7581545), (43, 2997355), (85, 1516309), (179, 720035), (197, 654245), (215, 599471), (731, 176315), (895, 144007), (985, 130849), (3043, 42355), (3349, 38485), (3655, 35263), (7697, 16745), (8471, 15215)]