21021600

素因数分解:

$2^5\times 3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{461}}^1$

素因数の和:503

約数の個数: 144

約数和(自身を含む): 72182880

約数和(自身を除く): 51161280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 25, 30, 32, 38, 40, 48, 50, 57, 60, 75, 76, 80, 95, 96, 100, 114, 120, 150, 152, 160, 190, 200, 228, 240, 285, 300, 304, 380, 400, 456, 461, 475, 480, 570, 600, 608, 760, 800, 912, 922, 950, 1140, 1200, 1383, 1425, 1520, 1824, 1844, 1900, 2280, 2305, 2400, 2766, 2850, 3040, 3688, 3800, 4560, 4610, 5532, 5700, 6915, 7376, 7600, 8759, 9120, 9220, 11064, 11400, 11525, 13830, 14752, 15200, 17518, 18440, 22128, 22800, 23050, 26277, 27660, 34575, 35036, 36880, 43795, 44256, 45600, 46100, 52554, 55320, 69150, 70072, 73760, 87590, 92200, 105108, 110640, 131385, 138300, 140144, 175180, 184400, 210216, 218975, 221280, 262770, 276600, 280288, 350360, 368800, 420432, 437950, 525540, 553200, 656925, 700720, 840864, 875900, 1051080, 1106400, 1313850, 1401440, 1751800, 2102160, 2627700, 3503600, 4204320, 5255400, 7007200, 10510800, 21021600]

約数ペア:

[(1, 21021600), (2, 10510800), (3, 7007200), (4, 5255400), (5, 4204320), (6, 3503600), (8, 2627700), (10, 2102160), (12, 1751800), (15, 1401440), (16, 1313850), (19, 1106400), (20, 1051080), (24, 875900), (25, 840864), (30, 700720), (32, 656925), (38, 553200), (40, 525540), (48, 437950), (50, 420432), (57, 368800), (60, 350360), (75, 280288), (76, 276600), (80, 262770), (95, 221280), (96, 218975), (100, 210216), (114, 184400), (120, 175180), (150, 140144), (152, 138300), (160, 131385), (190, 110640), (200, 105108), (228, 92200), (240, 87590), (285, 73760), (300, 70072), (304, 69150), (380, 55320), (400, 52554), (456, 46100), (461, 45600), (475, 44256), (480, 43795), (570, 36880), (600, 35036), (608, 34575), (760, 27660), (800, 26277), (912, 23050), (922, 22800), (950, 22128), (1140, 18440), (1200, 17518), (1383, 15200), (1425, 14752), (1520, 13830), (1824, 11525), (1844, 11400), (1900, 11064), (2280, 9220), (2305, 9120), (2400, 8759), (2766, 7600), (2850, 7376), (3040, 6915), (3688, 5700), (3800, 5532), (4560, 4610)]