51661395

素因数分解:

$3^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{641}}^1$

素因数の和:857

約数の個数: 40

約数和(自身を含む): 93218400

約数和(自身を除く): 41557005

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 199, 405, 597, 641, 995, 1791, 1923, 2985, 3205, 5373, 5769, 8955, 9615, 16119, 17307, 26865, 28845, 51921, 80595, 86535, 127559, 259605, 382677, 637795, 1148031, 1913385, 3444093, 5740155, 10332279, 17220465, 51661395]

約数ペア:

[(1, 51661395), (3, 17220465), (5, 10332279), (9, 5740155), (15, 3444093), (27, 1913385), (45, 1148031), (81, 637795), (135, 382677), (199, 259605), (405, 127559), (597, 86535), (641, 80595), (995, 51921), (1791, 28845), (1923, 26865), (2985, 17307), (3205, 16119), (5373, 9615), (5769, 8955)]