21086464

素因数分解:

$2^8\times 7^2\times {\mathrm{41}}^2$

素因数の和:112

約数の個数: 81

約数和(自身を含む): 50185821

約数和(自身を除く): 29099357

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 49, 56, 64, 82, 98, 112, 128, 164, 196, 224, 256, 287, 328, 392, 448, 574, 656, 784, 896, 1148, 1312, 1568, 1681, 1792, 2009, 2296, 2624, 3136, 3362, 4018, 4592, 5248, 6272, 6724, 8036, 9184, 10496, 11767, 12544, 13448, 16072, 18368, 23534, 26896, 32144, 36736, 47068, 53792, 64288, 73472, 82369, 94136, 107584, 128576, 164738, 188272, 215168, 257152, 329476, 376544, 430336, 514304, 658952, 753088, 1317904, 1506176, 2635808, 3012352, 5271616, 10543232, 21086464]

約数ペア:

[(1, 21086464), (2, 10543232), (4, 5271616), (7, 3012352), (8, 2635808), (14, 1506176), (16, 1317904), (28, 753088), (32, 658952), (41, 514304), (49, 430336), (56, 376544), (64, 329476), (82, 257152), (98, 215168), (112, 188272), (128, 164738), (164, 128576), (196, 107584), (224, 94136), (256, 82369), (287, 73472), (328, 64288), (392, 53792), (448, 47068), (574, 36736), (656, 32144), (784, 26896), (896, 23534), (1148, 18368), (1312, 16072), (1568, 13448), (1681, 12544), (1792, 11767), (2009, 10496), (2296, 9184), (2624, 8036), (3136, 6724), (3362, 6272), (4018, 5248)]