21131152

素因数分解:

$2^4\times 7^2\times {\mathrm{26953}}^1$

素因数の和:26975

約数の個数: 30

約数和(自身を含む): 47627718

約数和(自身を除く): 26496566

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784, 26953, 53906, 107812, 188671, 215624, 377342, 431248, 754684, 1320697, 1509368, 2641394, 3018736, 5282788, 10565576, 21131152]

約数ペア:

[(1, 21131152), (2, 10565576), (4, 5282788), (7, 3018736), (8, 2641394), (14, 1509368), (16, 1320697), (28, 754684), (49, 431248), (56, 377342), (98, 215624), (112, 188671), (196, 107812), (392, 53906), (784, 26953)]