7999720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4651}}^1$

素因数の和:4705

約数の個数: 32

約数和(自身を含む): 18421920

約数和(自身を除く): 10422200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 4651, 9302, 18604, 23255, 37208, 46510, 93020, 186040, 199993, 399986, 799972, 999965, 1599944, 1999930, 3999860, 7999720]

約数ペア:

[(1, 7999720), (2, 3999860), (4, 1999930), (5, 1599944), (8, 999965), (10, 799972), (20, 399986), (40, 199993), (43, 186040), (86, 93020), (172, 46510), (215, 37208), (344, 23255), (430, 18604), (860, 9302), (1720, 4651)]