21616140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:176

約数の個数: 192

約数和(自身を含む): 77220864

約数和(自身を除く): 55604724

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 37, 39, 42, 52, 60, 65, 70, 74, 78, 84, 91, 105, 107, 111, 130, 140, 148, 156, 182, 185, 195, 210, 214, 222, 259, 260, 273, 321, 364, 370, 390, 420, 428, 444, 455, 481, 518, 535, 546, 555, 642, 740, 749, 777, 780, 910, 962, 1036, 1070, 1092, 1110, 1284, 1295, 1365, 1391, 1443, 1498, 1554, 1605, 1820, 1924, 2140, 2220, 2247, 2405, 2590, 2730, 2782, 2886, 2996, 3108, 3210, 3367, 3745, 3885, 3959, 4173, 4494, 4810, 5180, 5460, 5564, 5772, 6420, 6734, 6955, 7215, 7490, 7770, 7918, 8346, 8988, 9620, 9737, 10101, 11235, 11877, 13468, 13910, 14430, 14980, 15540, 15836, 16692, 16835, 19474, 19795, 20202, 20865, 22470, 23754, 27713, 27820, 28860, 29211, 33670, 38948, 39590, 40404, 41730, 44940, 47508, 48685, 50505, 51467, 55426, 58422, 59385, 67340, 79180, 83139, 83460, 97370, 101010, 102934, 110852, 116844, 118770, 138565, 146055, 154401, 166278, 194740, 202020, 205868, 237540, 257335, 277130, 292110, 308802, 332556, 360269, 415695, 514670, 554260, 584220, 617604, 720538, 772005, 831390, 1029340, 1080807, 1441076, 1544010, 1662780, 1801345, 2161614, 3088020, 3602690, 4323228, 5404035, 7205380, 10808070, 21616140]

約数ペア:

[(1, 21616140), (2, 10808070), (3, 7205380), (4, 5404035), (5, 4323228), (6, 3602690), (7, 3088020), (10, 2161614), (12, 1801345), (13, 1662780), (14, 1544010), (15, 1441076), (20, 1080807), (21, 1029340), (26, 831390), (28, 772005), (30, 720538), (35, 617604), (37, 584220), (39, 554260), (42, 514670), (52, 415695), (60, 360269), (65, 332556), (70, 308802), (74, 292110), (78, 277130), (84, 257335), (91, 237540), (105, 205868), (107, 202020), (111, 194740), (130, 166278), (140, 154401), (148, 146055), (156, 138565), (182, 118770), (185, 116844), (195, 110852), (210, 102934), (214, 101010), (222, 97370), (259, 83460), (260, 83139), (273, 79180), (321, 67340), (364, 59385), (370, 58422), (390, 55426), (420, 51467), (428, 50505), (444, 48685), (455, 47508), (481, 44940), (518, 41730), (535, 40404), (546, 39590), (555, 38948), (642, 33670), (740, 29211), (749, 28860), (777, 27820), (780, 27713), (910, 23754), (962, 22470), (1036, 20865), (1070, 20202), (1092, 19795), (1110, 19474), (1284, 16835), (1295, 16692), (1365, 15836), (1391, 15540), (1443, 14980), (1498, 14430), (1554, 13910), (1605, 13468), (1820, 11877), (1924, 11235), (2140, 10101), (2220, 9737), (2247, 9620), (2405, 8988), (2590, 8346), (2730, 7918), (2782, 7770), (2886, 7490), (2996, 7215), (3108, 6955), (3210, 6734), (3367, 6420), (3745, 5772), (3885, 5564), (3959, 5460), (4173, 5180), (4494, 4810)]