20908688

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31873}}^1$

素因数の和:31922

約数の個数: 20

約数和(自身を含む): 41499948

約数和(自身を除く): 20591260

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31873, 63746, 127492, 254984, 509968, 1306793, 2613586, 5227172, 10454344, 20908688]

約数ペア:

[(1, 20908688), (2, 10454344), (4, 5227172), (8, 2613586), (16, 1306793), (41, 509968), (82, 254984), (164, 127492), (328, 63746), (656, 31873)]