261985215

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{277}}^1\times {\mathrm{3709}}^1$

素因数の和:4011

約数の個数: 32

約数和(自身を含む): 445556160

約数和(自身を除く): 183570945

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 277, 831, 1385, 3709, 4155, 4709, 11127, 14127, 18545, 23545, 55635, 63053, 70635, 189159, 315265, 945795, 1027393, 3082179, 5136965, 15410895, 17465681, 52397043, 87328405, 261985215]

約数ペア:

[(1, 261985215), (3, 87328405), (5, 52397043), (15, 17465681), (17, 15410895), (51, 5136965), (85, 3082179), (255, 1027393), (277, 945795), (831, 315265), (1385, 189159), (3709, 70635), (4155, 63053), (4709, 55635), (11127, 23545), (14127, 18545)]