28840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{103}}^1$

素因数の和:121

約数の個数: 32

約数和(自身を含む): 74880

約数和(自身を除く): 46040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 103, 140, 206, 280, 412, 515, 721, 824, 1030, 1442, 2060, 2884, 3605, 4120, 5768, 7210, 14420, 28840]

約数ペア:

[(1, 28840), (2, 14420), (4, 7210), (5, 5768), (7, 4120), (8, 3605), (10, 2884), (14, 2060), (20, 1442), (28, 1030), (35, 824), (40, 721), (56, 515), (70, 412), (103, 280), (140, 206)]