21654240

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{229}}^1$

素因数の和:444

約数の個数: 96

約数和(自身を含む): 68856480

約数和(自身を除く): 47202240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 197, 229, 240, 394, 458, 480, 591, 687, 788, 916, 985, 1145, 1182, 1374, 1576, 1832, 1970, 2290, 2364, 2748, 2955, 3152, 3435, 3664, 3940, 4580, 4728, 5496, 5910, 6304, 6870, 7328, 7880, 9160, 9456, 10992, 11820, 13740, 15760, 18320, 18912, 21984, 23640, 27480, 31520, 36640, 45113, 47280, 54960, 90226, 94560, 109920, 135339, 180452, 225565, 270678, 360904, 451130, 541356, 676695, 721808, 902260, 1082712, 1353390, 1443616, 1804520, 2165424, 2706780, 3609040, 4330848, 5413560, 7218080, 10827120, 21654240]

約数ペア:

[(1, 21654240), (2, 10827120), (3, 7218080), (4, 5413560), (5, 4330848), (6, 3609040), (8, 2706780), (10, 2165424), (12, 1804520), (15, 1443616), (16, 1353390), (20, 1082712), (24, 902260), (30, 721808), (32, 676695), (40, 541356), (48, 451130), (60, 360904), (80, 270678), (96, 225565), (120, 180452), (160, 135339), (197, 109920), (229, 94560), (240, 90226), (394, 54960), (458, 47280), (480, 45113), (591, 36640), (687, 31520), (788, 27480), (916, 23640), (985, 21984), (1145, 18912), (1182, 18320), (1374, 15760), (1576, 13740), (1832, 11820), (1970, 10992), (2290, 9456), (2364, 9160), (2748, 7880), (2955, 7328), (3152, 6870), (3435, 6304), (3664, 5910), (3940, 5496), (4580, 4728)]