21780360

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:137

約数の個数: 256

約数和(自身を含む): 86169600

約数和(自身を除く): 64389240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 43, 45, 54, 56, 60, 63, 67, 70, 72, 84, 86, 90, 105, 108, 120, 126, 129, 134, 135, 140, 168, 172, 180, 189, 201, 210, 215, 216, 252, 258, 268, 270, 280, 301, 315, 335, 344, 360, 378, 387, 402, 420, 430, 469, 504, 516, 536, 540, 602, 603, 630, 645, 670, 756, 774, 804, 840, 860, 903, 938, 945, 1005, 1032, 1080, 1161, 1204, 1206, 1260, 1290, 1340, 1407, 1505, 1512, 1548, 1608, 1720, 1806, 1809, 1876, 1890, 1935, 2010, 2322, 2345, 2408, 2412, 2520, 2580, 2680, 2709, 2814, 2881, 3010, 3015, 3096, 3612, 3618, 3752, 3780, 3870, 4020, 4221, 4515, 4644, 4690, 4824, 5160, 5418, 5628, 5762, 5805, 6020, 6030, 7035, 7224, 7236, 7560, 7740, 8040, 8127, 8442, 8643, 9030, 9045, 9288, 9380, 10836, 11256, 11524, 11610, 12040, 12060, 12663, 13545, 14070, 14405, 14472, 15480, 16254, 16884, 17286, 18060, 18090, 18760, 20167, 21105, 21672, 23048, 23220, 24120, 25326, 25929, 27090, 28140, 28810, 32508, 33768, 34572, 36120, 36180, 40334, 40635, 42210, 43215, 46440, 50652, 51858, 54180, 56280, 57620, 60501, 63315, 65016, 69144, 72360, 77787, 80668, 81270, 84420, 86430, 100835, 101304, 103716, 108360, 115240, 121002, 126630, 129645, 155574, 161336, 162540, 168840, 172860, 181503, 201670, 207432, 242004, 253260, 259290, 302505, 311148, 325080, 345720, 363006, 388935, 403340, 484008, 506520, 518580, 544509, 605010, 622296, 726012, 777870, 806680, 907515, 1037160, 1089018, 1210020, 1452024, 1555740, 1815030, 2178036, 2420040, 2722545, 3111480, 3630060, 4356072, 5445090, 7260120, 10890180, 21780360]

約数ペア:

[(1, 21780360), (2, 10890180), (3, 7260120), (4, 5445090), (5, 4356072), (6, 3630060), (7, 3111480), (8, 2722545), (9, 2420040), (10, 2178036), (12, 1815030), (14, 1555740), (15, 1452024), (18, 1210020), (20, 1089018), (21, 1037160), (24, 907515), (27, 806680), (28, 777870), (30, 726012), (35, 622296), (36, 605010), (40, 544509), (42, 518580), (43, 506520), (45, 484008), (54, 403340), (56, 388935), (60, 363006), (63, 345720), (67, 325080), (70, 311148), (72, 302505), (84, 259290), (86, 253260), (90, 242004), (105, 207432), (108, 201670), (120, 181503), (126, 172860), (129, 168840), (134, 162540), (135, 161336), (140, 155574), (168, 129645), (172, 126630), (180, 121002), (189, 115240), (201, 108360), (210, 103716), (215, 101304), (216, 100835), (252, 86430), (258, 84420), (268, 81270), (270, 80668), (280, 77787), (301, 72360), (315, 69144), (335, 65016), (344, 63315), (360, 60501), (378, 57620), (387, 56280), (402, 54180), (420, 51858), (430, 50652), (469, 46440), (504, 43215), (516, 42210), (536, 40635), (540, 40334), (602, 36180), (603, 36120), (630, 34572), (645, 33768), (670, 32508), (756, 28810), (774, 28140), (804, 27090), (840, 25929), (860, 25326), (903, 24120), (938, 23220), (945, 23048), (1005, 21672), (1032, 21105), (1080, 20167), (1161, 18760), (1204, 18090), (1206, 18060), (1260, 17286), (1290, 16884), (1340, 16254), (1407, 15480), (1505, 14472), (1512, 14405), (1548, 14070), (1608, 13545), (1720, 12663), (1806, 12060), (1809, 12040), (1876, 11610), (1890, 11524), (1935, 11256), (2010, 10836), (2322, 9380), (2345, 9288), (2408, 9045), (2412, 9030), (2520, 8643), (2580, 8442), (2680, 8127), (2709, 8040), (2814, 7740), (2881, 7560), (3010, 7236), (3015, 7224), (3096, 7035), (3612, 6030), (3618, 6020), (3752, 5805), (3780, 5762), (3870, 5628), (4020, 5418), (4221, 5160), (4515, 4824), (4644, 4690)]