181720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1$

素因数の和:88

約数の個数: 64

約数和(自身を含む): 518400

約数和(自身を除く): 336680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 59, 70, 77, 88, 110, 118, 140, 154, 220, 236, 280, 295, 308, 385, 413, 440, 472, 590, 616, 649, 770, 826, 1180, 1298, 1540, 1652, 2065, 2360, 2596, 3080, 3245, 3304, 4130, 4543, 5192, 6490, 8260, 9086, 12980, 16520, 18172, 22715, 25960, 36344, 45430, 90860, 181720]

約数ペア:

[(1, 181720), (2, 90860), (4, 45430), (5, 36344), (7, 25960), (8, 22715), (10, 18172), (11, 16520), (14, 12980), (20, 9086), (22, 8260), (28, 6490), (35, 5192), (40, 4543), (44, 4130), (55, 3304), (56, 3245), (59, 3080), (70, 2596), (77, 2360), (88, 2065), (110, 1652), (118, 1540), (140, 1298), (154, 1180), (220, 826), (236, 770), (280, 649), (295, 616), (308, 590), (385, 472), (413, 440)]