21000780444

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{349}}^1\times {\mathrm{102337}}^1$

素因数の和:102707

約数の個数: 72

約数和(自身を含む): 57166006800

約数和(自身を除く): 36165226356

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 196, 294, 349, 588, 698, 1047, 1396, 2094, 2443, 4188, 4886, 7329, 9772, 14658, 17101, 29316, 34202, 51303, 68404, 102337, 102606, 204674, 205212, 307011, 409348, 614022, 716359, 1228044, 1432718, 2149077, 2865436, 4298154, 5014513, 8596308, 10029026, 15043539, 20058052, 30087078, 35715613, 60174156, 71431226, 107146839, 142862452, 214293678, 250009291, 428587356, 500018582, 750027873, 1000037164, 1500055746, 1750065037, 3000111492, 3500130074, 5250195111, 7000260148, 10500390222, 21000780444]

約数ペア:

[(1, 21000780444), (2, 10500390222), (3, 7000260148), (4, 5250195111), (6, 3500130074), (7, 3000111492), (12, 1750065037), (14, 1500055746), (21, 1000037164), (28, 750027873), (42, 500018582), (49, 428587356), (84, 250009291), (98, 214293678), (147, 142862452), (196, 107146839), (294, 71431226), (349, 60174156), (588, 35715613), (698, 30087078), (1047, 20058052), (1396, 15043539), (2094, 10029026), (2443, 8596308), (4188, 5014513), (4886, 4298154), (7329, 2865436), (9772, 2149077), (14658, 1432718), (17101, 1228044), (29316, 716359), (34202, 614022), (51303, 409348), (68404, 307011), (102337, 205212), (102606, 204674)]