28551460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1871}}^1$

素因数の和:1996

約数の個数: 48

約数和(自身を含む): 69189120

約数和(自身を除く): 40637660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1526, 1871, 2180, 3052, 3742, 3815, 7484, 7630, 9355, 13097, 15260, 18710, 26194, 37420, 52388, 65485, 130970, 203939, 261940, 407878, 815756, 1019695, 1427573, 2039390, 2855146, 4078780, 5710292, 7137865, 14275730, 28551460]

約数ペア:

[(1, 28551460), (2, 14275730), (4, 7137865), (5, 5710292), (7, 4078780), (10, 2855146), (14, 2039390), (20, 1427573), (28, 1019695), (35, 815756), (70, 407878), (109, 261940), (140, 203939), (218, 130970), (436, 65485), (545, 52388), (763, 37420), (1090, 26194), (1526, 18710), (1871, 15260), (2180, 13097), (3052, 9355), (3742, 7630), (3815, 7484)]