81512757

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{421}}^1$

素因数の和:602

約数の個数: 32

約数和(自身を含む): 123966720

約数和(自身を除く): 42453963

約数列:

[1, 3, 9, 27, 71, 101, 213, 303, 421, 639, 909, 1263, 1917, 2727, 3789, 7171, 11367, 21513, 29891, 42521, 64539, 89673, 127563, 193617, 269019, 382689, 807057, 1148067, 3018991, 9056973, 27170919, 81512757]

約数ペア:

[(1, 81512757), (3, 27170919), (9, 9056973), (27, 3018991), (71, 1148067), (101, 807057), (213, 382689), (303, 269019), (421, 193617), (639, 127563), (909, 89673), (1263, 64539), (1917, 42521), (2727, 29891), (3789, 21513), (7171, 11367)]