21385168

素因数分解:

$2^4\times 7^2\times {\mathrm{27277}}^1$

素因数の和:27299

約数の個数: 30

約数和(自身を含む): 48200226

約数和(自身を除く): 26815058

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784, 27277, 54554, 109108, 190939, 218216, 381878, 436432, 763756, 1336573, 1527512, 2673146, 3055024, 5346292, 10692584, 21385168]

約数ペア:

[(1, 21385168), (2, 10692584), (4, 5346292), (7, 3055024), (8, 2673146), (14, 1527512), (16, 1336573), (28, 763756), (49, 436432), (56, 381878), (98, 218216), (112, 190939), (196, 109108), (392, 54554), (784, 27277)]