128009008

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:685

約数の個数: 40

約数和(自身を含む): 252149040

約数和(自身を除く): 124140032

約数列:

[1, 2, 4, 8, 16, 131, 157, 262, 314, 389, 524, 628, 778, 1048, 1256, 1556, 2096, 2512, 3112, 6224, 20567, 41134, 50959, 61073, 82268, 101918, 122146, 164536, 203836, 244292, 329072, 407672, 488584, 815344, 977168, 8000563, 16001126, 32002252, 64004504, 128009008]

約数ペア:

[(1, 128009008), (2, 64004504), (4, 32002252), (8, 16001126), (16, 8000563), (131, 977168), (157, 815344), (262, 488584), (314, 407672), (389, 329072), (524, 244292), (628, 203836), (778, 164536), (1048, 122146), (1256, 101918), (1556, 82268), (2096, 61073), (2512, 50959), (3112, 41134), (6224, 20567)]