81239490

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1559}}^1$

素因数の和:1768

約数の個数: 64

約数和(自身を含む): 217900800

約数和(自身を除く): 136661310

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 193, 270, 386, 579, 965, 1158, 1559, 1737, 1930, 2895, 3118, 3474, 4677, 5211, 5790, 7795, 8685, 9354, 10422, 14031, 15590, 17370, 23385, 26055, 28062, 42093, 46770, 52110, 70155, 84186, 140310, 210465, 300887, 420930, 601774, 902661, 1504435, 1805322, 2707983, 3008870, 4513305, 5415966, 8123949, 9026610, 13539915, 16247898, 27079830, 40619745, 81239490]

約数ペア:

[(1, 81239490), (2, 40619745), (3, 27079830), (5, 16247898), (6, 13539915), (9, 9026610), (10, 8123949), (15, 5415966), (18, 4513305), (27, 3008870), (30, 2707983), (45, 1805322), (54, 1504435), (90, 902661), (135, 601774), (193, 420930), (270, 300887), (386, 210465), (579, 140310), (965, 84186), (1158, 70155), (1559, 52110), (1737, 46770), (1930, 42093), (2895, 28062), (3118, 26055), (3474, 23385), (4677, 17370), (5211, 15590), (5790, 14031), (7795, 10422), (8685, 9354)]