20157688

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{81281}}^1$

素因数の和:81318

約数の個数: 16

約数和(自身を含む): 39015360

約数和(自身を除く): 18857672

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 81281, 162562, 325124, 650248, 2519711, 5039422, 10078844, 20157688]

約数ペア:

[(1, 20157688), (2, 10078844), (4, 5039422), (8, 2519711), (31, 650248), (62, 325124), (124, 162562), (248, 81281)]