128006816

素因数分解:

$2^5\times 7^2\times {\mathrm{81637}}^1$

素因数の和:81661

約数の個数: 36

約数和(自身を含む): 293162058

約数和(自身を除く): 165155242

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 112, 196, 224, 392, 784, 1568, 81637, 163274, 326548, 571459, 653096, 1142918, 1306192, 2285836, 2612384, 4000213, 4571672, 8000426, 9143344, 16000852, 18286688, 32001704, 64003408, 128006816]

約数ペア:

[(1, 128006816), (2, 64003408), (4, 32001704), (7, 18286688), (8, 16000852), (14, 9143344), (16, 8000426), (28, 4571672), (32, 4000213), (49, 2612384), (56, 2285836), (98, 1306192), (112, 1142918), (196, 653096), (224, 571459), (392, 326548), (784, 163274), (1568, 81637)]