638761388

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{50873}}^1$

素因数の和:50993

約数の個数: 24

約数和(自身を含む): 1159520208

約数和(自身を除く): 520758820

約数列:

[1, 2, 4, 43, 73, 86, 146, 172, 292, 3139, 6278, 12556, 50873, 101746, 203492, 2187539, 3713729, 4375078, 7427458, 8750156, 14854916, 159690347, 319380694, 638761388]

約数ペア:

[(1, 638761388), (2, 319380694), (4, 159690347), (43, 14854916), (73, 8750156), (86, 7427458), (146, 4375078), (172, 3713729), (292, 2187539), (3139, 203492), (6278, 101746), (12556, 50873)]