812840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{2903}}^1$

素因数の和:2921

約数の個数: 32

約数和(自身を含む): 2090880

約数和(自身を除く): 1278040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 2903, 5806, 11612, 14515, 20321, 23224, 29030, 40642, 58060, 81284, 101605, 116120, 162568, 203210, 406420, 812840]

約数ペア:

[(1, 812840), (2, 406420), (4, 203210), (5, 162568), (7, 116120), (8, 101605), (10, 81284), (14, 58060), (20, 40642), (28, 29030), (35, 23224), (40, 20321), (56, 14515), (70, 11612), (140, 5806), (280, 2903)]