28289428

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{643}}^1\times {\mathrm{647}}^1$

素因数の和:1311

約数の個数: 24

約数和(自身を含む): 52581312

約数和(自身を除く): 24291884

約数列:

[1, 2, 4, 17, 34, 68, 643, 647, 1286, 1294, 2572, 2588, 10931, 10999, 21862, 21998, 43724, 43996, 416021, 832042, 1664084, 7072357, 14144714, 28289428]

約数ペア:

[(1, 28289428), (2, 14144714), (4, 7072357), (17, 1664084), (34, 832042), (68, 416021), (643, 43996), (647, 43724), (1286, 21998), (1294, 21862), (2572, 10999), (2588, 10931)]