278221775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{3331}}^1$

素因数の和:3611

約数の個数: 24

約数和(自身を含む): 373090704

約数和(自身を除く): 94868929

約数列:

[1, 5, 13, 25, 65, 257, 325, 1285, 3331, 3341, 6425, 16655, 16705, 43303, 83275, 83525, 216515, 856067, 1082575, 4280335, 11128871, 21401675, 55644355, 278221775]

約数ペア:

[(1, 278221775), (5, 55644355), (13, 21401675), (25, 11128871), (65, 4280335), (257, 1082575), (325, 856067), (1285, 216515), (3331, 83525), (3341, 83275), (6425, 43303), (16655, 16705)]