21660002720

素因数分解:

$2^5\times 5^1\times {\mathrm{113}}^1\times {\mathrm{701}}^1\times {\mathrm{1709}}^1$

素因数の和:2538

約数の個数: 96

約数和(自身を含む): 51728498640

約数和(自身を除く): 30068495920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 113, 160, 226, 452, 565, 701, 904, 1130, 1402, 1709, 1808, 2260, 2804, 3418, 3505, 3616, 4520, 5608, 6836, 7010, 8545, 9040, 11216, 13672, 14020, 17090, 18080, 22432, 27344, 28040, 34180, 54688, 56080, 68360, 79213, 112160, 136720, 158426, 193117, 273440, 316852, 386234, 396065, 633704, 772468, 792130, 965585, 1198009, 1267408, 1544936, 1584260, 1931170, 2396018, 2534816, 3089872, 3168520, 3862340, 4792036, 5990045, 6179744, 6337040, 7724680, 9584072, 11980090, 12674080, 15449360, 19168144, 23960180, 30898720, 38336288, 47920360, 95840720, 135375017, 191681440, 270750034, 541500068, 676875085, 1083000136, 1353750170, 2166000272, 2707500340, 4332000544, 5415000680, 10830001360, 21660002720]

約数ペア:

[(1, 21660002720), (2, 10830001360), (4, 5415000680), (5, 4332000544), (8, 2707500340), (10, 2166000272), (16, 1353750170), (20, 1083000136), (32, 676875085), (40, 541500068), (80, 270750034), (113, 191681440), (160, 135375017), (226, 95840720), (452, 47920360), (565, 38336288), (701, 30898720), (904, 23960180), (1130, 19168144), (1402, 15449360), (1709, 12674080), (1808, 11980090), (2260, 9584072), (2804, 7724680), (3418, 6337040), (3505, 6179744), (3616, 5990045), (4520, 4792036), (5608, 3862340), (6836, 3168520), (7010, 3089872), (8545, 2534816), (9040, 2396018), (11216, 1931170), (13672, 1584260), (14020, 1544936), (17090, 1267408), (18080, 1198009), (22432, 965585), (27344, 792130), (28040, 772468), (34180, 633704), (54688, 396065), (56080, 386234), (68360, 316852), (79213, 273440), (112160, 193117), (136720, 158426)]