15999440

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4651}}^1$

素因数の和:4707

約数の個数: 40

約数和(自身を含む): 38071968

約数和(自身を除く): 22072528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 4651, 9302, 18604, 23255, 37208, 46510, 74416, 93020, 186040, 199993, 372080, 399986, 799972, 999965, 1599944, 1999930, 3199888, 3999860, 7999720, 15999440]

約数ペア:

[(1, 15999440), (2, 7999720), (4, 3999860), (5, 3199888), (8, 1999930), (10, 1599944), (16, 999965), (20, 799972), (40, 399986), (43, 372080), (80, 199993), (86, 186040), (172, 93020), (215, 74416), (344, 46510), (430, 37208), (688, 23255), (860, 18604), (1720, 9302), (3440, 4651)]