19918678

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1901}}^1$

素因数の和:1960

約数の個数: 24

約数和(自身を含む): 33414336

約数和(自身を除く): 13495658

約数列:

[1, 2, 13, 26, 31, 62, 169, 338, 403, 806, 1901, 3802, 5239, 10478, 24713, 49426, 58931, 117862, 321269, 642538, 766103, 1532206, 9959339, 19918678]

約数ペア:

[(1, 19918678), (2, 9959339), (13, 1532206), (26, 766103), (31, 642538), (62, 321269), (169, 117862), (338, 58931), (403, 49426), (806, 24713), (1901, 10478), (3802, 5239)]