209708520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{593}}^1$

素因数の和:1035

約数の個数: 128

約数和(自身を含む): 721923840

約数和(自身を除く): 512215320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 421, 593, 840, 842, 1186, 1263, 1684, 1779, 2105, 2372, 2526, 2947, 2965, 3368, 3558, 4151, 4210, 4744, 5052, 5894, 5930, 6315, 7116, 8302, 8420, 8841, 8895, 10104, 11788, 11860, 12453, 12630, 14232, 14735, 16604, 16840, 17682, 17790, 20755, 23576, 23720, 24906, 25260, 29470, 33208, 35364, 35580, 41510, 44205, 49812, 50520, 58940, 62265, 70728, 71160, 83020, 88410, 99624, 117880, 124530, 166040, 176820, 249060, 249653, 353640, 498120, 499306, 748959, 998612, 1248265, 1497918, 1747571, 1997224, 2496530, 2995836, 3495142, 3744795, 4993060, 5242713, 5991672, 6990284, 7489590, 8737855, 9986120, 10485426, 13980568, 14979180, 17475710, 20970852, 26213565, 29958360, 34951420, 41941704, 52427130, 69902840, 104854260, 209708520]

約数ペア:

[(1, 209708520), (2, 104854260), (3, 69902840), (4, 52427130), (5, 41941704), (6, 34951420), (7, 29958360), (8, 26213565), (10, 20970852), (12, 17475710), (14, 14979180), (15, 13980568), (20, 10485426), (21, 9986120), (24, 8737855), (28, 7489590), (30, 6990284), (35, 5991672), (40, 5242713), (42, 4993060), (56, 3744795), (60, 3495142), (70, 2995836), (84, 2496530), (105, 1997224), (120, 1747571), (140, 1497918), (168, 1248265), (210, 998612), (280, 748959), (420, 499306), (421, 498120), (593, 353640), (840, 249653), (842, 249060), (1186, 176820), (1263, 166040), (1684, 124530), (1779, 117880), (2105, 99624), (2372, 88410), (2526, 83020), (2947, 71160), (2965, 70728), (3368, 62265), (3558, 58940), (4151, 50520), (4210, 49812), (4744, 44205), (5052, 41510), (5894, 35580), (5930, 35364), (6315, 33208), (7116, 29470), (8302, 25260), (8420, 24906), (8841, 23720), (8895, 23576), (10104, 20755), (11788, 17790), (11860, 17682), (12453, 16840), (12630, 16604), (14232, 14735)]