19578064

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{643}}^1$

素因数の和:835

約数の個数: 40

約数和(自身を含む): 41684832

約数和(自身を除く): 22106768

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 173, 176, 346, 643, 692, 1286, 1384, 1903, 2572, 2768, 3806, 5144, 7073, 7612, 10288, 14146, 15224, 28292, 30448, 56584, 111239, 113168, 222478, 444956, 889912, 1223629, 1779824, 2447258, 4894516, 9789032, 19578064]

約数ペア:

[(1, 19578064), (2, 9789032), (4, 4894516), (8, 2447258), (11, 1779824), (16, 1223629), (22, 889912), (44, 444956), (88, 222478), (173, 113168), (176, 111239), (346, 56584), (643, 30448), (692, 28292), (1286, 15224), (1384, 14146), (1903, 10288), (2572, 7612), (2768, 7073), (3806, 5144)]