81140220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{907}}^1$

素因数の和:1000

約数の個数: 144

約数和(自身を含む): 285562368

約数和(自身を除く): 204422148

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, 907, 994, 1065, 1260, 1278, 1420, 1491, 1814, 1988, 2130, 2485, 2556, 2721, 2982, 3195, 3628, 4260, 4473, 4535, 4970, 5442, 5964, 6349, 6390, 7455, 8163, 8946, 9070, 9940, 10884, 12698, 12780, 13605, 14910, 16326, 17892, 18140, 19047, 22365, 25396, 27210, 29820, 31745, 32652, 38094, 40815, 44730, 54420, 57141, 63490, 64397, 76188, 81630, 89460, 95235, 114282, 126980, 128794, 163260, 190470, 193191, 228564, 257588, 285705, 321985, 380940, 386382, 450779, 571410, 579573, 643970, 772764, 901558, 965955, 1142820, 1159146, 1287940, 1352337, 1803116, 1931910, 2253895, 2318292, 2704674, 2897865, 3863820, 4057011, 4507790, 5409348, 5795730, 6761685, 8114022, 9015580, 11591460, 13523370, 16228044, 20285055, 27046740, 40570110, 81140220]

約数ペア:

[(1, 81140220), (2, 40570110), (3, 27046740), (4, 20285055), (5, 16228044), (6, 13523370), (7, 11591460), (9, 9015580), (10, 8114022), (12, 6761685), (14, 5795730), (15, 5409348), (18, 4507790), (20, 4057011), (21, 3863820), (28, 2897865), (30, 2704674), (35, 2318292), (36, 2253895), (42, 1931910), (45, 1803116), (60, 1352337), (63, 1287940), (70, 1159146), (71, 1142820), (84, 965955), (90, 901558), (105, 772764), (126, 643970), (140, 579573), (142, 571410), (180, 450779), (210, 386382), (213, 380940), (252, 321985), (284, 285705), (315, 257588), (355, 228564), (420, 193191), (426, 190470), (497, 163260), (630, 128794), (639, 126980), (710, 114282), (852, 95235), (907, 89460), (994, 81630), (1065, 76188), (1260, 64397), (1278, 63490), (1420, 57141), (1491, 54420), (1814, 44730), (1988, 40815), (2130, 38094), (2485, 32652), (2556, 31745), (2721, 29820), (2982, 27210), (3195, 25396), (3628, 22365), (4260, 19047), (4473, 18140), (4535, 17892), (4970, 16326), (5442, 14910), (5964, 13605), (6349, 12780), (6390, 12698), (7455, 10884), (8163, 9940), (8946, 9070)]