19525940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{661}}^1$

素因数の和:888

約数の個数: 48

約数和(自身を含む): 47155584

約数和(自身を除く): 27629644

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 422, 661, 844, 1055, 1322, 1477, 2110, 2644, 2954, 3305, 4220, 4627, 5908, 6610, 7385, 9254, 13220, 14770, 18508, 23135, 29540, 46270, 92540, 139471, 278942, 557884, 697355, 976297, 1394710, 1952594, 2789420, 3905188, 4881485, 9762970, 19525940]

約数ペア:

[(1, 19525940), (2, 9762970), (4, 4881485), (5, 3905188), (7, 2789420), (10, 1952594), (14, 1394710), (20, 976297), (28, 697355), (35, 557884), (70, 278942), (140, 139471), (211, 92540), (422, 46270), (661, 29540), (844, 23135), (1055, 18508), (1322, 14770), (1477, 13220), (2110, 9254), (2644, 7385), (2954, 6610), (3305, 5908), (4220, 4627)]