81477900

素因数分解:

$2^2\times 3^5\times 5^2\times 7^1\times {\mathrm{479}}^1$

素因数の和:515

約数の個数: 216

約数和(自身を含む): 303313920

約数和(自身を除く): 221836020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 27, 28, 30, 35, 36, 42, 45, 50, 54, 60, 63, 70, 75, 81, 84, 90, 100, 105, 108, 126, 135, 140, 150, 162, 175, 180, 189, 210, 225, 243, 252, 270, 300, 315, 324, 350, 378, 405, 420, 450, 479, 486, 525, 540, 567, 630, 675, 700, 756, 810, 900, 945, 958, 972, 1050, 1134, 1215, 1260, 1350, 1437, 1575, 1620, 1701, 1890, 1916, 2025, 2100, 2268, 2395, 2430, 2700, 2835, 2874, 3150, 3353, 3402, 3780, 4050, 4311, 4725, 4790, 4860, 5670, 5748, 6075, 6300, 6706, 6804, 7185, 8100, 8505, 8622, 9450, 9580, 10059, 11340, 11975, 12150, 12933, 13412, 14175, 14370, 16765, 17010, 17244, 18900, 20118, 21555, 23950, 24300, 25866, 28350, 28740, 30177, 33530, 34020, 35925, 38799, 40236, 42525, 43110, 47900, 50295, 51732, 56700, 60354, 64665, 67060, 71850, 77598, 83825, 85050, 86220, 90531, 100590, 107775, 116397, 120708, 129330, 143700, 150885, 155196, 167650, 170100, 181062, 193995, 201180, 215550, 232794, 251475, 258660, 271593, 301770, 323325, 335300, 362124, 387990, 431100, 452655, 465588, 502950, 543186, 581985, 603540, 646650, 754425, 775980, 814779, 905310, 969975, 1005900, 1086372, 1163970, 1293300, 1357965, 1508850, 1629558, 1810620, 1939950, 2263275, 2327940, 2715930, 2909925, 3017700, 3259116, 3879900, 4073895, 4526550, 5431860, 5819850, 6789825, 8147790, 9053100, 11639700, 13579650, 16295580, 20369475, 27159300, 40738950, 81477900]

約数ペア:

[(1, 81477900), (2, 40738950), (3, 27159300), (4, 20369475), (5, 16295580), (6, 13579650), (7, 11639700), (9, 9053100), (10, 8147790), (12, 6789825), (14, 5819850), (15, 5431860), (18, 4526550), (20, 4073895), (21, 3879900), (25, 3259116), (27, 3017700), (28, 2909925), (30, 2715930), (35, 2327940), (36, 2263275), (42, 1939950), (45, 1810620), (50, 1629558), (54, 1508850), (60, 1357965), (63, 1293300), (70, 1163970), (75, 1086372), (81, 1005900), (84, 969975), (90, 905310), (100, 814779), (105, 775980), (108, 754425), (126, 646650), (135, 603540), (140, 581985), (150, 543186), (162, 502950), (175, 465588), (180, 452655), (189, 431100), (210, 387990), (225, 362124), (243, 335300), (252, 323325), (270, 301770), (300, 271593), (315, 258660), (324, 251475), (350, 232794), (378, 215550), (405, 201180), (420, 193995), (450, 181062), (479, 170100), (486, 167650), (525, 155196), (540, 150885), (567, 143700), (630, 129330), (675, 120708), (700, 116397), (756, 107775), (810, 100590), (900, 90531), (945, 86220), (958, 85050), (972, 83825), (1050, 77598), (1134, 71850), (1215, 67060), (1260, 64665), (1350, 60354), (1437, 56700), (1575, 51732), (1620, 50295), (1701, 47900), (1890, 43110), (1916, 42525), (2025, 40236), (2100, 38799), (2268, 35925), (2395, 34020), (2430, 33530), (2700, 30177), (2835, 28740), (2874, 28350), (3150, 25866), (3353, 24300), (3402, 23950), (3780, 21555), (4050, 20118), (4311, 18900), (4725, 17244), (4790, 17010), (4860, 16765), (5670, 14370), (5748, 14175), (6075, 13412), (6300, 12933), (6706, 12150), (6804, 11975), (7185, 11340), (8100, 10059), (8505, 9580), (8622, 9450)]