81304155

素因数分解:

$3^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1097}}^1$

素因数の和:1178

約数の個数: 48

約数和(自身を含む): 148677984

約数和(自身を除く): 67373829

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 243, 305, 405, 549, 915, 1097, 1215, 1647, 2745, 3291, 4941, 5485, 8235, 9873, 14823, 16455, 24705, 29619, 49365, 66917, 74115, 88857, 148095, 200751, 266571, 334585, 444285, 602253, 1003755, 1332855, 1806759, 3011265, 5420277, 9033795, 16260831, 27101385, 81304155]

約数ペア:

[(1, 81304155), (3, 27101385), (5, 16260831), (9, 9033795), (15, 5420277), (27, 3011265), (45, 1806759), (61, 1332855), (81, 1003755), (135, 602253), (183, 444285), (243, 334585), (305, 266571), (405, 200751), (549, 148095), (915, 88857), (1097, 74115), (1215, 66917), (1647, 49365), (2745, 29619), (3291, 24705), (4941, 16455), (5485, 14823), (8235, 9873)]