21321664

素因数分解:

$2^6\times 7^2\times {\mathrm{13}}^1\times {\mathrm{523}}^1$

素因数の和:562

約数の個数: 84

約数和(自身を含む): 53105304

約数和(自身を除く): 31783640

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 64, 91, 98, 104, 112, 182, 196, 208, 224, 364, 392, 416, 448, 523, 637, 728, 784, 832, 1046, 1274, 1456, 1568, 2092, 2548, 2912, 3136, 3661, 4184, 5096, 5824, 6799, 7322, 8368, 10192, 13598, 14644, 16736, 20384, 25627, 27196, 29288, 33472, 40768, 47593, 51254, 54392, 58576, 95186, 102508, 108784, 117152, 190372, 205016, 217568, 234304, 333151, 380744, 410032, 435136, 666302, 761488, 820064, 1332604, 1522976, 1640128, 2665208, 3045952, 5330416, 10660832, 21321664]

約数ペア:

[(1, 21321664), (2, 10660832), (4, 5330416), (7, 3045952), (8, 2665208), (13, 1640128), (14, 1522976), (16, 1332604), (26, 820064), (28, 761488), (32, 666302), (49, 435136), (52, 410032), (56, 380744), (64, 333151), (91, 234304), (98, 217568), (104, 205016), (112, 190372), (182, 117152), (196, 108784), (208, 102508), (224, 95186), (364, 58576), (392, 54392), (416, 51254), (448, 47593), (523, 40768), (637, 33472), (728, 29288), (784, 27196), (832, 25627), (1046, 20384), (1274, 16736), (1456, 14644), (1568, 13598), (2092, 10192), (2548, 8368), (2912, 7322), (3136, 6799), (3661, 5824), (4184, 5096)]