128974216

素因数分解:

$2^3\times 7^1\times {\mathrm{131}}^1\times {\mathrm{17581}}^1$

素因数の和:17725

約数の個数: 32

約数和(自身を含む): 278498880

約数和(自身を除く): 149524664

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 131, 262, 524, 917, 1048, 1834, 3668, 7336, 17581, 35162, 70324, 123067, 140648, 246134, 492268, 984536, 2303111, 4606222, 9212444, 16121777, 18424888, 32243554, 64487108, 128974216]

約数ペア:

[(1, 128974216), (2, 64487108), (4, 32243554), (7, 18424888), (8, 16121777), (14, 9212444), (28, 4606222), (56, 2303111), (131, 984536), (262, 492268), (524, 246134), (917, 140648), (1048, 123067), (1834, 70324), (3668, 35162), (7336, 17581)]