638343720

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{84437}}^1$

素因数の和:84464

約数の個数: 128

約数和(自身を含む): 2431814400

約数和(自身を除く): 1793470680

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, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 3780, 7560, 84437, 168874, 253311, 337748, 422185, 506622, 591059, 675496, 759933, 844370, 1013244, 1182118, 1266555, 1519866, 1688740, 1773177, 2026488, 2279799, 2364236, 2533110, 2955295, 3039732, 3377480, 3546354, 3799665, 4559598, 4728472, 5066220, 5319531, 5910590, 6079464, 7092708, 7599330, 8865885, 9119196, 10132440, 10639062, 11398995, 11821180, 14185416, 15198660, 15958593, 17731770, 18238392, 21278124, 22797990, 23642360, 26597655, 30397320, 31917186, 35463540, 42556248, 45595980, 53195310, 63834372, 70927080, 79792965, 91191960, 106390620, 127668744, 159585930, 212781240, 319171860, 638343720]

約数ペア:

[(1, 638343720), (2, 319171860), (3, 212781240), (4, 159585930), (5, 127668744), (6, 106390620), (7, 91191960), (8, 79792965), (9, 70927080), (10, 63834372), (12, 53195310), (14, 45595980), (15, 42556248), (18, 35463540), (20, 31917186), (21, 30397320), (24, 26597655), (27, 23642360), (28, 22797990), (30, 21278124), (35, 18238392), (36, 17731770), (40, 15958593), (42, 15198660), (45, 14185416), (54, 11821180), (56, 11398995), (60, 10639062), (63, 10132440), (70, 9119196), (72, 8865885), (84, 7599330), (90, 7092708), (105, 6079464), (108, 5910590), (120, 5319531), (126, 5066220), (135, 4728472), (140, 4559598), (168, 3799665), (180, 3546354), (189, 3377480), (210, 3039732), (216, 2955295), (252, 2533110), (270, 2364236), (280, 2279799), (315, 2026488), (360, 1773177), (378, 1688740), (420, 1519866), (504, 1266555), (540, 1182118), (630, 1013244), (756, 844370), (840, 759933), (945, 675496), (1080, 591059), (1260, 506622), (1512, 422185), (1890, 337748), (2520, 253311), (3780, 168874), (7560, 84437)]