20815705520

素因数分解:

$2^4\times 5^1\times {\mathrm{8713}}^1\times {\mathrm{29863}}^1$

素因数の和:38589

約数の個数: 40

約数和(自身を含む): 48403690656

約数和(自身を除く): 27587985136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8713, 17426, 29863, 34852, 43565, 59726, 69704, 87130, 119452, 139408, 149315, 174260, 238904, 298630, 348520, 477808, 597260, 697040, 1194520, 2389040, 260196319, 520392638, 1040785276, 1300981595, 2081570552, 2601963190, 4163141104, 5203926380, 10407852760, 20815705520]

約数ペア:

[(1, 20815705520), (2, 10407852760), (4, 5203926380), (5, 4163141104), (8, 2601963190), (10, 2081570552), (16, 1300981595), (20, 1040785276), (40, 520392638), (80, 260196319), (8713, 2389040), (17426, 1194520), (29863, 697040), (34852, 597260), (43565, 477808), (59726, 348520), (69704, 298630), (87130, 238904), (119452, 174260), (139408, 149315)]