28947280

素因数分解:

$2^4\times 5^1\times {\mathrm{487}}^1\times {\mathrm{743}}^1$

素因数の和:1243

約数の個数: 40

約数和(自身を含む): 67531392

約数和(自身を除く): 38584112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 487, 743, 974, 1486, 1948, 2435, 2972, 3715, 3896, 4870, 5944, 7430, 7792, 9740, 11888, 14860, 19480, 29720, 38960, 59440, 361841, 723682, 1447364, 1809205, 2894728, 3618410, 5789456, 7236820, 14473640, 28947280]

約数ペア:

[(1, 28947280), (2, 14473640), (4, 7236820), (5, 5789456), (8, 3618410), (10, 2894728), (16, 1809205), (20, 1447364), (40, 723682), (80, 361841), (487, 59440), (743, 38960), (974, 29720), (1486, 19480), (1948, 14860), (2435, 11888), (2972, 9740), (3715, 7792), (3896, 7430), (4870, 5944)]