19867408

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{719}}^1$

素因数の和:895

約数の個数: 40

約数和(自身を含む): 42318720

約数和(自身を除く): 22451312

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 157, 176, 314, 628, 719, 1256, 1438, 1727, 2512, 2876, 3454, 5752, 6908, 7909, 11504, 13816, 15818, 27632, 31636, 63272, 112883, 126544, 225766, 451532, 903064, 1241713, 1806128, 2483426, 4966852, 9933704, 19867408]

約数ペア:

[(1, 19867408), (2, 9933704), (4, 4966852), (8, 2483426), (11, 1806128), (16, 1241713), (22, 903064), (44, 451532), (88, 225766), (157, 126544), (176, 112883), (314, 63272), (628, 31636), (719, 27632), (1256, 15818), (1438, 13816), (1727, 11504), (2512, 7909), (2876, 6908), (3454, 5752)]