261885

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1$

素因数の和:117

約数の個数: 32

約数和(自身を含む): 483840

約数和(自身を除く): 221955

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 79, 85, 195, 221, 237, 255, 395, 663, 1027, 1105, 1185, 1343, 3081, 3315, 4029, 5135, 6715, 15405, 17459, 20145, 52377, 87295, 261885]

約数ペア:

[(1, 261885), (3, 87295), (5, 52377), (13, 20145), (15, 17459), (17, 15405), (39, 6715), (51, 5135), (65, 4029), (79, 3315), (85, 3081), (195, 1343), (221, 1185), (237, 1105), (255, 1027), (395, 663)]