27989955

素因数分解:

$3^6\times 5^1\times 7^1\times {\mathrm{1097}}^1$

素因数の和:1127

約数の個数: 56

約数和(自身を含む): 57605472

約数和(自身を除く): 29615517

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 729, 945, 1097, 1215, 1701, 2835, 3291, 3645, 5103, 5485, 7679, 8505, 9873, 16455, 23037, 25515, 29619, 38395, 49365, 69111, 88857, 115185, 148095, 207333, 266571, 345555, 444285, 621999, 799713, 1036665, 1332855, 1865997, 3109995, 3998565, 5597991, 9329985, 27989955]

約数ペア:

[(1, 27989955), (3, 9329985), (5, 5597991), (7, 3998565), (9, 3109995), (15, 1865997), (21, 1332855), (27, 1036665), (35, 799713), (45, 621999), (63, 444285), (81, 345555), (105, 266571), (135, 207333), (189, 148095), (243, 115185), (315, 88857), (405, 69111), (567, 49365), (729, 38395), (945, 29619), (1097, 25515), (1215, 23037), (1701, 16455), (2835, 9873), (3291, 8505), (3645, 7679), (5103, 5485)]