81375966

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{257}}^1\times {\mathrm{359}}^1$

素因数の和:638

約数の個数: 72

約数和(自身を含む): 206472240

約数和(自身を除く): 125096274

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 147, 257, 294, 359, 441, 514, 718, 771, 882, 1077, 1542, 1799, 2154, 2313, 2513, 3231, 3598, 4626, 5026, 5397, 6462, 7539, 10794, 12593, 15078, 16191, 17591, 22617, 25186, 32382, 35182, 37779, 45234, 52773, 75558, 92263, 105546, 113337, 158319, 184526, 226674, 276789, 316638, 553578, 645841, 830367, 1291682, 1660734, 1937523, 3875046, 4520887, 5812569, 9041774, 11625138, 13562661, 27125322, 40687983, 81375966]

約数ペア:

[(1, 81375966), (2, 40687983), (3, 27125322), (6, 13562661), (7, 11625138), (9, 9041774), (14, 5812569), (18, 4520887), (21, 3875046), (42, 1937523), (49, 1660734), (63, 1291682), (98, 830367), (126, 645841), (147, 553578), (257, 316638), (294, 276789), (359, 226674), (441, 184526), (514, 158319), (718, 113337), (771, 105546), (882, 92263), (1077, 75558), (1542, 52773), (1799, 45234), (2154, 37779), (2313, 35182), (2513, 32382), (3231, 25186), (3598, 22617), (4626, 17591), (5026, 16191), (5397, 15078), (6462, 12593), (7539, 10794)]