21806160

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2113}}^1$

素因数の和:2172

約数の個数: 80

約数和(自身を含む): 69203904

約数和(自身を除く): 47397744

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 80, 86, 120, 129, 172, 215, 240, 258, 344, 430, 516, 645, 688, 860, 1032, 1290, 1720, 2064, 2113, 2580, 3440, 4226, 5160, 6339, 8452, 10320, 10565, 12678, 16904, 21130, 25356, 31695, 33808, 42260, 50712, 63390, 84520, 90859, 101424, 126780, 169040, 181718, 253560, 272577, 363436, 454295, 507120, 545154, 726872, 908590, 1090308, 1362885, 1453744, 1817180, 2180616, 2725770, 3634360, 4361232, 5451540, 7268720, 10903080, 21806160]

約数ペア:

[(1, 21806160), (2, 10903080), (3, 7268720), (4, 5451540), (5, 4361232), (6, 3634360), (8, 2725770), (10, 2180616), (12, 1817180), (15, 1453744), (16, 1362885), (20, 1090308), (24, 908590), (30, 726872), (40, 545154), (43, 507120), (48, 454295), (60, 363436), (80, 272577), (86, 253560), (120, 181718), (129, 169040), (172, 126780), (215, 101424), (240, 90859), (258, 84520), (344, 63390), (430, 50712), (516, 42260), (645, 33808), (688, 31695), (860, 25356), (1032, 21130), (1290, 16904), (1720, 12678), (2064, 10565), (2113, 10320), (2580, 8452), (3440, 6339), (4226, 5160)]