57428840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{205103}}^1$

素因数の和:205121

約数の個数: 32

約数和(自身を含む): 147674880

約数和(自身を除く): 90246040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 205103, 410206, 820412, 1025515, 1435721, 1640824, 2051030, 2871442, 4102060, 5742884, 7178605, 8204120, 11485768, 14357210, 28714420, 57428840]

約数ペア:

[(1, 57428840), (2, 28714420), (4, 14357210), (5, 11485768), (7, 8204120), (8, 7178605), (10, 5742884), (14, 4102060), (20, 2871442), (28, 2051030), (35, 1640824), (40, 1435721), (56, 1025515), (70, 820412), (140, 410206), (280, 205103)]