78561981

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{967}}^1$

素因数の和:1055

約数の個数: 40

約数和(自身を含む): 126498240

約数和(自身を除く): 47936259

約数列:

[1, 3, 9, 17, 27, 51, 59, 81, 153, 177, 459, 531, 967, 1003, 1377, 1593, 2901, 3009, 4779, 8703, 9027, 16439, 26109, 27081, 49317, 57053, 78327, 81243, 147951, 171159, 443853, 513477, 969901, 1331559, 1540431, 2909703, 4621293, 8729109, 26187327, 78561981]

約数ペア:

[(1, 78561981), (3, 26187327), (9, 8729109), (17, 4621293), (27, 2909703), (51, 1540431), (59, 1331559), (81, 969901), (153, 513477), (177, 443853), (459, 171159), (531, 147951), (967, 81243), (1003, 78327), (1377, 57053), (1593, 49317), (2901, 27081), (3009, 26109), (4779, 16439), (8703, 9027)]