128521456

素因数分解:

$2^4\times 7^1\times {\mathrm{157}}^1\times {\mathrm{7309}}^1$

素因数の和:7481

約数の個数: 40

約数和(自身を含む): 286435040

約数和(自身を除く): 157913584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 157, 314, 628, 1099, 1256, 2198, 2512, 4396, 7309, 8792, 14618, 17584, 29236, 51163, 58472, 102326, 116944, 204652, 409304, 818608, 1147513, 2295026, 4590052, 8032591, 9180104, 16065182, 18360208, 32130364, 64260728, 128521456]

約数ペア:

[(1, 128521456), (2, 64260728), (4, 32130364), (7, 18360208), (8, 16065182), (14, 9180104), (16, 8032591), (28, 4590052), (56, 2295026), (112, 1147513), (157, 818608), (314, 409304), (628, 204652), (1099, 116944), (1256, 102326), (2198, 58472), (2512, 51163), (4396, 29236), (7309, 17584), (8792, 14618)]