21609720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:155

約数の個数: 256

約数和(自身を含む): 83980800

約数和(自身を除く): 62371080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 17, 18, 20, 22, 24, 27, 30, 33, 34, 36, 40, 44, 45, 51, 54, 55, 60, 66, 68, 72, 85, 88, 90, 99, 102, 107, 108, 110, 120, 132, 135, 136, 153, 165, 170, 180, 187, 198, 204, 214, 216, 220, 255, 264, 270, 297, 306, 321, 330, 340, 360, 374, 396, 408, 428, 440, 459, 495, 510, 535, 540, 561, 594, 612, 642, 660, 680, 748, 765, 792, 856, 918, 935, 963, 990, 1020, 1070, 1080, 1122, 1177, 1188, 1224, 1284, 1320, 1485, 1496, 1530, 1605, 1683, 1819, 1836, 1870, 1926, 1980, 2040, 2140, 2244, 2295, 2354, 2376, 2568, 2805, 2889, 2970, 3060, 3210, 3366, 3531, 3638, 3672, 3740, 3852, 3960, 4280, 4488, 4590, 4708, 4815, 5049, 5457, 5610, 5778, 5885, 5940, 6120, 6420, 6732, 7062, 7276, 7480, 7704, 8415, 9095, 9180, 9416, 9630, 10098, 10593, 10914, 11220, 11556, 11770, 11880, 12840, 13464, 14124, 14445, 14552, 16371, 16830, 17655, 18190, 18360, 19260, 20009, 20196, 21186, 21828, 22440, 23112, 23540, 25245, 27285, 28248, 28890, 31779, 32742, 33660, 35310, 36380, 38520, 40018, 40392, 42372, 43656, 47080, 49113, 50490, 52965, 54570, 57780, 60027, 63558, 65484, 67320, 70620, 72760, 80036, 81855, 84744, 98226, 100045, 100980, 105930, 109140, 115560, 120054, 127116, 130968, 141240, 158895, 160072, 163710, 180081, 196452, 200090, 201960, 211860, 218280, 240108, 245565, 254232, 300135, 317790, 327420, 360162, 392904, 400180, 423720, 480216, 491130, 540243, 600270, 635580, 654840, 720324, 800360, 900405, 982260, 1080486, 1200540, 1271160, 1440648, 1800810, 1964520, 2160972, 2401080, 2701215, 3601620, 4321944, 5402430, 7203240, 10804860, 21609720]

約数ペア:

[(1, 21609720), (2, 10804860), (3, 7203240), (4, 5402430), (5, 4321944), (6, 3601620), (8, 2701215), (9, 2401080), (10, 2160972), (11, 1964520), (12, 1800810), (15, 1440648), (17, 1271160), (18, 1200540), (20, 1080486), (22, 982260), (24, 900405), (27, 800360), (30, 720324), (33, 654840), (34, 635580), (36, 600270), (40, 540243), (44, 491130), (45, 480216), (51, 423720), (54, 400180), (55, 392904), (60, 360162), (66, 327420), (68, 317790), (72, 300135), (85, 254232), (88, 245565), (90, 240108), (99, 218280), (102, 211860), (107, 201960), (108, 200090), (110, 196452), (120, 180081), (132, 163710), (135, 160072), (136, 158895), (153, 141240), (165, 130968), (170, 127116), (180, 120054), (187, 115560), (198, 109140), (204, 105930), (214, 100980), (216, 100045), (220, 98226), (255, 84744), (264, 81855), (270, 80036), (297, 72760), (306, 70620), (321, 67320), (330, 65484), (340, 63558), (360, 60027), (374, 57780), (396, 54570), (408, 52965), (428, 50490), (440, 49113), (459, 47080), (495, 43656), (510, 42372), (535, 40392), (540, 40018), (561, 38520), (594, 36380), (612, 35310), (642, 33660), (660, 32742), (680, 31779), (748, 28890), (765, 28248), (792, 27285), (856, 25245), (918, 23540), (935, 23112), (963, 22440), (990, 21828), (1020, 21186), (1070, 20196), (1080, 20009), (1122, 19260), (1177, 18360), (1188, 18190), (1224, 17655), (1284, 16830), (1320, 16371), (1485, 14552), (1496, 14445), (1530, 14124), (1605, 13464), (1683, 12840), (1819, 11880), (1836, 11770), (1870, 11556), (1926, 11220), (1980, 10914), (2040, 10593), (2140, 10098), (2244, 9630), (2295, 9416), (2354, 9180), (2376, 9095), (2568, 8415), (2805, 7704), (2889, 7480), (2970, 7276), (3060, 7062), (3210, 6732), (3366, 6420), (3531, 6120), (3638, 5940), (3672, 5885), (3740, 5778), (3852, 5610), (3960, 5457), (4280, 5049), (4488, 4815), (4590, 4708)]