19945912

素因数分解:

$2^3\times 7^1\times {\mathrm{353}}^1\times {\mathrm{1009}}^1$

素因数の和:1375

約数の個数: 32

約数和(自身を含む): 42904800

約数和(自身を除く): 22958888

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 353, 706, 1009, 1412, 2018, 2471, 2824, 4036, 4942, 7063, 8072, 9884, 14126, 19768, 28252, 56504, 356177, 712354, 1424708, 2493239, 2849416, 4986478, 9972956, 19945912]

約数ペア:

[(1, 19945912), (2, 9972956), (4, 4986478), (7, 2849416), (8, 2493239), (14, 1424708), (28, 712354), (56, 356177), (353, 56504), (706, 28252), (1009, 19768), (1412, 14126), (2018, 9884), (2471, 8072), (2824, 7063), (4036, 4942)]