208454985

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{449}}^1$

素因数の和:663

約数の個数: 64

約数和(自身を含む): 393120000

約数和(自身を除く): 184665015

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 181, 285, 449, 513, 543, 855, 905, 1347, 1629, 2245, 2565, 2715, 3439, 4041, 4887, 6735, 8145, 8531, 10317, 12123, 17195, 20205, 24435, 25593, 30951, 42655, 51585, 60615, 76779, 81269, 92853, 127965, 154755, 230337, 243807, 383895, 406345, 464265, 731421, 1151685, 1219035, 1544111, 2194263, 3657105, 4632333, 7720555, 10971315, 13896999, 23161665, 41690997, 69484995, 208454985]

約数ペア:

[(1, 208454985), (3, 69484995), (5, 41690997), (9, 23161665), (15, 13896999), (19, 10971315), (27, 7720555), (45, 4632333), (57, 3657105), (95, 2194263), (135, 1544111), (171, 1219035), (181, 1151685), (285, 731421), (449, 464265), (513, 406345), (543, 383895), (855, 243807), (905, 230337), (1347, 154755), (1629, 127965), (2245, 92853), (2565, 81269), (2715, 76779), (3439, 60615), (4041, 51585), (4887, 42655), (6735, 30951), (8145, 25593), (8531, 24435), (10317, 20205), (12123, 17195)]