19729928

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{607}}^1$

素因数の和:869

約数の個数: 32

約数和(自身を含む): 39398400

約数和(自身を除く): 19668472

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 239, 478, 607, 956, 1214, 1912, 2428, 4063, 4856, 8126, 10319, 16252, 20638, 32504, 41276, 82552, 145073, 290146, 580292, 1160584, 2466241, 4932482, 9864964, 19729928]

約数ペア:

[(1, 19729928), (2, 9864964), (4, 4932482), (8, 2466241), (17, 1160584), (34, 580292), (68, 290146), (136, 145073), (239, 82552), (478, 41276), (607, 32504), (956, 20638), (1214, 16252), (1912, 10319), (2428, 8126), (4063, 4856)]