28784980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{205607}}^1$

素因数の和:205623

約数の個数: 24

約数和(自身を含む): 69084288

約数和(自身を除く): 40299308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 205607, 411214, 822428, 1028035, 1439249, 2056070, 2878498, 4112140, 5756996, 7196245, 14392490, 28784980]

約数ペア:

[(1, 28784980), (2, 14392490), (4, 7196245), (5, 5756996), (7, 4112140), (10, 2878498), (14, 2056070), (20, 1439249), (28, 1028035), (35, 822428), (70, 411214), (140, 205607)]