256516815

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{39133}}^1$

素因数の和:39183

約数の個数: 32

約数和(自身を含む): 450823680

約数和(自身を除く): 194306865

約数列:

[1, 3, 5, 15, 19, 23, 57, 69, 95, 115, 285, 345, 437, 1311, 2185, 6555, 39133, 117399, 195665, 586995, 743527, 900059, 2230581, 2700177, 3717635, 4500295, 11152905, 13500885, 17101121, 51303363, 85505605, 256516815]

約数ペア:

[(1, 256516815), (3, 85505605), (5, 51303363), (15, 17101121), (19, 13500885), (23, 11152905), (57, 4500295), (69, 3717635), (95, 2700177), (115, 2230581), (285, 900059), (345, 743527), (437, 586995), (1311, 195665), (2185, 117399), (6555, 39133)]