81618888

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^2\times {\mathrm{20123}}^1$

素因数の和:20158

約数の個数: 48

約数和(自身を含む): 220961520

約数和(自身を除く): 139342632

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 169, 312, 338, 507, 676, 1014, 1352, 2028, 4056, 20123, 40246, 60369, 80492, 120738, 160984, 241476, 261599, 482952, 523198, 784797, 1046396, 1569594, 2092792, 3139188, 3400787, 6278376, 6801574, 10202361, 13603148, 20404722, 27206296, 40809444, 81618888]

約数ペア:

[(1, 81618888), (2, 40809444), (3, 27206296), (4, 20404722), (6, 13603148), (8, 10202361), (12, 6801574), (13, 6278376), (24, 3400787), (26, 3139188), (39, 2092792), (52, 1569594), (78, 1046396), (104, 784797), (156, 523198), (169, 482952), (312, 261599), (338, 241476), (507, 160984), (676, 120738), (1014, 80492), (1352, 60369), (2028, 40246), (4056, 20123)]