128778888

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{766541}}^1$

素因数の和:766557

約数の個数: 32

約数和(自身を含む): 367940160

約数和(自身を除く): 239161272

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 766541, 1533082, 2299623, 3066164, 4599246, 5365787, 6132328, 9198492, 10731574, 16097361, 18396984, 21463148, 32194722, 42926296, 64389444, 128778888]

約数ペア:

[(1, 128778888), (2, 64389444), (3, 42926296), (4, 32194722), (6, 21463148), (7, 18396984), (8, 16097361), (12, 10731574), (14, 9198492), (21, 6132328), (24, 5365787), (28, 4599246), (42, 3066164), (56, 2299623), (84, 1533082), (168, 766541)]