19109960

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{743}}^1$

素因数の和:1397

約数の個数: 32

約数和(自身を含む): 43122240

約数和(自身を除く): 24012280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 743, 1286, 1486, 2572, 2972, 3215, 3715, 5144, 5944, 6430, 7430, 12860, 14860, 25720, 29720, 477749, 955498, 1910996, 2388745, 3821992, 4777490, 9554980, 19109960]

約数ペア:

[(1, 19109960), (2, 9554980), (4, 4777490), (5, 3821992), (8, 2388745), (10, 1910996), (20, 955498), (40, 477749), (643, 29720), (743, 25720), (1286, 14860), (1486, 12860), (2572, 7430), (2972, 6430), (3215, 5944), (3715, 5144)]