8154520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:496

約数の個数: 64

約数和(自身を含む): 20528640

約数和(自身を除く): 12374120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 431, 440, 473, 860, 862, 946, 1720, 1724, 1892, 2155, 2365, 3448, 3784, 4310, 4730, 4741, 8620, 9460, 9482, 17240, 18533, 18920, 18964, 23705, 37066, 37928, 47410, 74132, 92665, 94820, 148264, 185330, 189640, 203863, 370660, 407726, 741320, 815452, 1019315, 1630904, 2038630, 4077260, 8154520]

約数ペア:

[(1, 8154520), (2, 4077260), (4, 2038630), (5, 1630904), (8, 1019315), (10, 815452), (11, 741320), (20, 407726), (22, 370660), (40, 203863), (43, 189640), (44, 185330), (55, 148264), (86, 94820), (88, 92665), (110, 74132), (172, 47410), (215, 37928), (220, 37066), (344, 23705), (430, 18964), (431, 18920), (440, 18533), (473, 17240), (860, 9482), (862, 9460), (946, 8620), (1720, 4741), (1724, 4730), (1892, 4310), (2155, 3784), (2365, 3448)]