21623680

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1$

素因数の和:168

約数の個数: 128

約数和(自身を含む): 58605120

約数和(自身を除く): 36981440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 64, 65, 80, 92, 104, 113, 115, 128, 130, 160, 184, 208, 226, 230, 260, 299, 320, 368, 416, 452, 460, 520, 565, 598, 640, 736, 832, 904, 920, 1040, 1130, 1196, 1469, 1472, 1495, 1664, 1808, 1840, 2080, 2260, 2392, 2599, 2938, 2944, 2990, 3616, 3680, 4160, 4520, 4784, 5198, 5876, 5980, 7232, 7345, 7360, 8320, 9040, 9568, 10396, 11752, 11960, 12995, 14464, 14690, 14720, 18080, 19136, 20792, 23504, 23920, 25990, 29380, 33787, 36160, 38272, 41584, 47008, 47840, 51980, 58760, 67574, 72320, 83168, 94016, 95680, 103960, 117520, 135148, 166336, 168935, 188032, 191360, 207920, 235040, 270296, 332672, 337870, 415840, 470080, 540592, 675740, 831680, 940160, 1081184, 1351480, 1663360, 2162368, 2702960, 4324736, 5405920, 10811840, 21623680]

約数ペア:

[(1, 21623680), (2, 10811840), (4, 5405920), (5, 4324736), (8, 2702960), (10, 2162368), (13, 1663360), (16, 1351480), (20, 1081184), (23, 940160), (26, 831680), (32, 675740), (40, 540592), (46, 470080), (52, 415840), (64, 337870), (65, 332672), (80, 270296), (92, 235040), (104, 207920), (113, 191360), (115, 188032), (128, 168935), (130, 166336), (160, 135148), (184, 117520), (208, 103960), (226, 95680), (230, 94016), (260, 83168), (299, 72320), (320, 67574), (368, 58760), (416, 51980), (452, 47840), (460, 47008), (520, 41584), (565, 38272), (598, 36160), (640, 33787), (736, 29380), (832, 25990), (904, 23920), (920, 23504), (1040, 20792), (1130, 19136), (1196, 18080), (1469, 14720), (1472, 14690), (1495, 14464), (1664, 12995), (1808, 11960), (1840, 11752), (2080, 10396), (2260, 9568), (2392, 9040), (2599, 8320), (2938, 7360), (2944, 7345), (2990, 7232), (3616, 5980), (3680, 5876), (4160, 5198), (4520, 4784)]