19880336

素因数分解:

$2^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1277}}^1$

素因数の和:1431

約数の個数: 40

約数和(自身を含む): 44372160

約数和(自身を除く): 24491824

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 139, 278, 556, 973, 1112, 1277, 1946, 2224, 2554, 3892, 5108, 7784, 8939, 10216, 15568, 17878, 20432, 35756, 71512, 143024, 177503, 355006, 710012, 1242521, 1420024, 2485042, 2840048, 4970084, 9940168, 19880336]

約数ペア:

[(1, 19880336), (2, 9940168), (4, 4970084), (7, 2840048), (8, 2485042), (14, 1420024), (16, 1242521), (28, 710012), (56, 355006), (112, 177503), (139, 143024), (278, 71512), (556, 35756), (973, 20432), (1112, 17878), (1277, 15568), (1946, 10216), (2224, 8939), (2554, 7784), (3892, 5108)]