128363720

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{23087}}^1$

素因数の和:23237

約数の個数: 32

約数和(自身を含む): 290908800

約数和(自身を除く): 162545080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 23087, 46174, 92348, 115435, 184696, 230870, 461740, 923480, 3209093, 6418186, 12836372, 16045465, 25672744, 32090930, 64181860, 128363720]

約数ペア:

[(1, 128363720), (2, 64181860), (4, 32090930), (5, 25672744), (8, 16045465), (10, 12836372), (20, 6418186), (40, 3209093), (139, 923480), (278, 461740), (556, 230870), (695, 184696), (1112, 115435), (1390, 92348), (2780, 46174), (5560, 23087)]