21123900

素因数分解:

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

素因数の和:513

約数の個数: 162

約数和(自身を含む): 77182560

約数和(自身を除く): 56058660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 49, 50, 60, 63, 70, 75, 84, 90, 98, 100, 105, 126, 140, 147, 150, 175, 180, 196, 210, 225, 245, 252, 294, 300, 315, 350, 420, 441, 450, 479, 490, 525, 588, 630, 700, 735, 882, 900, 958, 980, 1050, 1225, 1260, 1437, 1470, 1575, 1764, 1916, 2100, 2205, 2395, 2450, 2874, 2940, 3150, 3353, 3675, 4311, 4410, 4790, 4900, 5748, 6300, 6706, 7185, 7350, 8622, 8820, 9580, 10059, 11025, 11975, 13412, 14370, 14700, 16765, 17244, 20118, 21555, 22050, 23471, 23950, 28740, 30177, 33530, 35925, 40236, 43110, 44100, 46942, 47900, 50295, 60354, 67060, 70413, 71850, 83825, 86220, 93884, 100590, 107775, 117355, 120708, 140826, 143700, 150885, 167650, 201180, 211239, 215550, 234710, 251475, 281652, 301770, 335300, 352065, 422478, 431100, 469420, 502950, 586775, 603540, 704130, 754425, 844956, 1005900, 1056195, 1173550, 1408260, 1508850, 1760325, 2112390, 2347100, 3017700, 3520650, 4224780, 5280975, 7041300, 10561950, 21123900]

約数ペア:

[(1, 21123900), (2, 10561950), (3, 7041300), (4, 5280975), (5, 4224780), (6, 3520650), (7, 3017700), (9, 2347100), (10, 2112390), (12, 1760325), (14, 1508850), (15, 1408260), (18, 1173550), (20, 1056195), (21, 1005900), (25, 844956), (28, 754425), (30, 704130), (35, 603540), (36, 586775), (42, 502950), (45, 469420), (49, 431100), (50, 422478), (60, 352065), (63, 335300), (70, 301770), (75, 281652), (84, 251475), (90, 234710), (98, 215550), (100, 211239), (105, 201180), (126, 167650), (140, 150885), (147, 143700), (150, 140826), (175, 120708), (180, 117355), (196, 107775), (210, 100590), (225, 93884), (245, 86220), (252, 83825), (294, 71850), (300, 70413), (315, 67060), (350, 60354), (420, 50295), (441, 47900), (450, 46942), (479, 44100), (490, 43110), (525, 40236), (588, 35925), (630, 33530), (700, 30177), (735, 28740), (882, 23950), (900, 23471), (958, 22050), (980, 21555), (1050, 20118), (1225, 17244), (1260, 16765), (1437, 14700), (1470, 14370), (1575, 13412), (1764, 11975), (1916, 11025), (2100, 10059), (2205, 9580), (2395, 8820), (2450, 8622), (2874, 7350), (2940, 7185), (3150, 6706), (3353, 6300), (3675, 5748), (4311, 4900), (4410, 4790)]