66479720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{38651}}^1$

素因数の和:38705

約数の個数: 32

約数和(自身を含む): 153061920

約数和(自身を除く): 86582200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 38651, 77302, 154604, 193255, 309208, 386510, 773020, 1546040, 1661993, 3323986, 6647972, 8309965, 13295944, 16619930, 33239860, 66479720]

約数ペア:

[(1, 66479720), (2, 33239860), (4, 16619930), (5, 13295944), (8, 8309965), (10, 6647972), (20, 3323986), (40, 1661993), (43, 1546040), (86, 773020), (172, 386510), (215, 309208), (344, 193255), (430, 154604), (860, 77302), (1720, 38651)]