639377984

素因数分解:

$2^6\times 7^1\times {\mathrm{887}}^1\times {\mathrm{1609}}^1$

素因数の和:2515

約数の個数: 56

約数和(自身を含む): 1452554880

約数和(自身を除く): 813176896

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 224, 448, 887, 1609, 1774, 3218, 3548, 6209, 6436, 7096, 11263, 12418, 12872, 14192, 22526, 24836, 25744, 28384, 45052, 49672, 51488, 56768, 90104, 99344, 102976, 180208, 198688, 360416, 397376, 720832, 1427183, 2854366, 5708732, 9990281, 11417464, 19980562, 22834928, 39961124, 45669856, 79922248, 91339712, 159844496, 319688992, 639377984]

約数ペア:

[(1, 639377984), (2, 319688992), (4, 159844496), (7, 91339712), (8, 79922248), (14, 45669856), (16, 39961124), (28, 22834928), (32, 19980562), (56, 11417464), (64, 9990281), (112, 5708732), (224, 2854366), (448, 1427183), (887, 720832), (1609, 397376), (1774, 360416), (3218, 198688), (3548, 180208), (6209, 102976), (6436, 99344), (7096, 90104), (11263, 56768), (12418, 51488), (12872, 49672), (14192, 45052), (22526, 28384), (24836, 25744)]