81591720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{709}}^1$

素因数の和:867

約数の個数: 128

約数和(自身を含む): 282182400

約数和(自身を除く): 200590680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 137, 140, 168, 210, 274, 280, 411, 420, 548, 685, 709, 822, 840, 959, 1096, 1370, 1418, 1644, 1918, 2055, 2127, 2740, 2836, 2877, 3288, 3545, 3836, 4110, 4254, 4795, 4963, 5480, 5672, 5754, 7090, 7672, 8220, 8508, 9590, 9926, 10635, 11508, 14180, 14385, 14889, 16440, 17016, 19180, 19852, 21270, 23016, 24815, 28360, 28770, 29778, 38360, 39704, 42540, 49630, 57540, 59556, 74445, 85080, 97133, 99260, 115080, 119112, 148890, 194266, 198520, 291399, 297780, 388532, 485665, 582798, 595560, 679931, 777064, 971330, 1165596, 1359862, 1456995, 1942660, 2039793, 2331192, 2719724, 2913990, 3399655, 3885320, 4079586, 5439448, 5827980, 6799310, 8159172, 10198965, 11655960, 13598620, 16318344, 20397930, 27197240, 40795860, 81591720]

約数ペア:

[(1, 81591720), (2, 40795860), (3, 27197240), (4, 20397930), (5, 16318344), (6, 13598620), (7, 11655960), (8, 10198965), (10, 8159172), (12, 6799310), (14, 5827980), (15, 5439448), (20, 4079586), (21, 3885320), (24, 3399655), (28, 2913990), (30, 2719724), (35, 2331192), (40, 2039793), (42, 1942660), (56, 1456995), (60, 1359862), (70, 1165596), (84, 971330), (105, 777064), (120, 679931), (137, 595560), (140, 582798), (168, 485665), (210, 388532), (274, 297780), (280, 291399), (411, 198520), (420, 194266), (548, 148890), (685, 119112), (709, 115080), (822, 99260), (840, 97133), (959, 85080), (1096, 74445), (1370, 59556), (1418, 57540), (1644, 49630), (1918, 42540), (2055, 39704), (2127, 38360), (2740, 29778), (2836, 28770), (2877, 28360), (3288, 24815), (3545, 23016), (3836, 21270), (4110, 19852), (4254, 19180), (4795, 17016), (4963, 16440), (5480, 14889), (5672, 14385), (5754, 14180), (7090, 11508), (7672, 10635), (8220, 9926), (8508, 9590)]