81498060

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{911}}^1$

素因数の和:1004

約数の個数: 144

約数和(自身を含む): 286820352

約数和(自身を除く): 205322292

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 71, 84, 90, 105, 126, 140, 142, 180, 210, 213, 252, 284, 315, 355, 420, 426, 497, 630, 639, 710, 852, 911, 994, 1065, 1260, 1278, 1420, 1491, 1822, 1988, 2130, 2485, 2556, 2733, 2982, 3195, 3644, 4260, 4473, 4555, 4970, 5466, 5964, 6377, 6390, 7455, 8199, 8946, 9110, 9940, 10932, 12754, 12780, 13665, 14910, 16398, 17892, 18220, 19131, 22365, 25508, 27330, 29820, 31885, 32796, 38262, 40995, 44730, 54660, 57393, 63770, 64681, 76524, 81990, 89460, 95655, 114786, 127540, 129362, 163980, 191310, 194043, 229572, 258724, 286965, 323405, 382620, 388086, 452767, 573930, 582129, 646810, 776172, 905534, 970215, 1147860, 1164258, 1293620, 1358301, 1811068, 1940430, 2263835, 2328516, 2716602, 2910645, 3880860, 4074903, 4527670, 5433204, 5821290, 6791505, 8149806, 9055340, 11642580, 13583010, 16299612, 20374515, 27166020, 40749030, 81498060]

約数ペア:

[(1, 81498060), (2, 40749030), (3, 27166020), (4, 20374515), (5, 16299612), (6, 13583010), (7, 11642580), (9, 9055340), (10, 8149806), (12, 6791505), (14, 5821290), (15, 5433204), (18, 4527670), (20, 4074903), (21, 3880860), (28, 2910645), (30, 2716602), (35, 2328516), (36, 2263835), (42, 1940430), (45, 1811068), (60, 1358301), (63, 1293620), (70, 1164258), (71, 1147860), (84, 970215), (90, 905534), (105, 776172), (126, 646810), (140, 582129), (142, 573930), (180, 452767), (210, 388086), (213, 382620), (252, 323405), (284, 286965), (315, 258724), (355, 229572), (420, 194043), (426, 191310), (497, 163980), (630, 129362), (639, 127540), (710, 114786), (852, 95655), (911, 89460), (994, 81990), (1065, 76524), (1260, 64681), (1278, 63770), (1420, 57393), (1491, 54660), (1822, 44730), (1988, 40995), (2130, 38262), (2485, 32796), (2556, 31885), (2733, 29820), (2982, 27330), (3195, 25508), (3644, 22365), (4260, 19131), (4473, 18220), (4555, 17892), (4970, 16398), (5466, 14910), (5964, 13665), (6377, 12780), (6390, 12754), (7455, 10932), (8199, 9940), (8946, 9110)]