21051968

素因数分解:

$2^6\times 7^4\times {\mathrm{137}}^1$

素因数の和:177

約数の個数: 70

約数和(自身を含む): 49090326

約数和(自身を除く): 28038358

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 137, 196, 224, 274, 343, 392, 448, 548, 686, 784, 959, 1096, 1372, 1568, 1918, 2192, 2401, 2744, 3136, 3836, 4384, 4802, 5488, 6713, 7672, 8768, 9604, 10976, 13426, 15344, 19208, 21952, 26852, 30688, 38416, 46991, 53704, 61376, 76832, 93982, 107408, 153664, 187964, 214816, 328937, 375928, 429632, 657874, 751856, 1315748, 1503712, 2631496, 3007424, 5262992, 10525984, 21051968]

約数ペア:

[(1, 21051968), (2, 10525984), (4, 5262992), (7, 3007424), (8, 2631496), (14, 1503712), (16, 1315748), (28, 751856), (32, 657874), (49, 429632), (56, 375928), (64, 328937), (98, 214816), (112, 187964), (137, 153664), (196, 107408), (224, 93982), (274, 76832), (343, 61376), (392, 53704), (448, 46991), (548, 38416), (686, 30688), (784, 26852), (959, 21952), (1096, 19208), (1372, 15344), (1568, 13426), (1918, 10976), (2192, 9604), (2401, 8768), (2744, 7672), (3136, 6713), (3836, 5488), (4384, 4802)]