28749555

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{557}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 52925184

約数和(自身を除く): 24175629

約数列:

[1, 3, 5, 9, 15, 31, 37, 45, 93, 111, 155, 185, 279, 333, 465, 555, 557, 1147, 1395, 1665, 1671, 2785, 3441, 5013, 5735, 8355, 10323, 17205, 17267, 20609, 25065, 51615, 51801, 61827, 86335, 103045, 155403, 185481, 259005, 309135, 638879, 777015, 927405, 1916637, 3194395, 5749911, 9583185, 28749555]

約数ペア:

[(1, 28749555), (3, 9583185), (5, 5749911), (9, 3194395), (15, 1916637), (31, 927405), (37, 777015), (45, 638879), (93, 309135), (111, 259005), (155, 185481), (185, 155403), (279, 103045), (333, 86335), (465, 61827), (555, 51801), (557, 51615), (1147, 25065), (1395, 20609), (1665, 17267), (1671, 17205), (2785, 10323), (3441, 8355), (5013, 5735)]