21307552

素因数分解:

$2^5\times 7^2\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:258

約数の個数: 72

約数和(自身を含む): 49641984

約数和(自身を除く): 28334432

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 107, 112, 127, 196, 214, 224, 254, 392, 428, 508, 749, 784, 856, 889, 1016, 1498, 1568, 1712, 1778, 2032, 2996, 3424, 3556, 4064, 5243, 5992, 6223, 7112, 10486, 11984, 12446, 13589, 14224, 20972, 23968, 24892, 27178, 28448, 41944, 49784, 54356, 83888, 95123, 99568, 108712, 167776, 190246, 199136, 217424, 380492, 434848, 665861, 760984, 1331722, 1521968, 2663444, 3043936, 5326888, 10653776, 21307552]

約数ペア:

[(1, 21307552), (2, 10653776), (4, 5326888), (7, 3043936), (8, 2663444), (14, 1521968), (16, 1331722), (28, 760984), (32, 665861), (49, 434848), (56, 380492), (98, 217424), (107, 199136), (112, 190246), (127, 167776), (196, 108712), (214, 99568), (224, 95123), (254, 83888), (392, 54356), (428, 49784), (508, 41944), (749, 28448), (784, 27178), (856, 24892), (889, 23968), (1016, 20972), (1498, 14224), (1568, 13589), (1712, 12446), (1778, 11984), (2032, 10486), (2996, 7112), (3424, 6223), (3556, 5992), (4064, 5243)]