128956816

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{63463}}^1$

素因数の和:63598

約数の個数: 20

約数和(自身を含む): 251825152

約数和(自身を除く): 122868336

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 63463, 126926, 253852, 507704, 1015408, 8059801, 16119602, 32239204, 64478408, 128956816]

約数ペア:

[(1, 128956816), (2, 64478408), (4, 32239204), (8, 16119602), (16, 8059801), (127, 1015408), (254, 507704), (508, 253852), (1016, 126926), (2032, 63463)]