19937990

素因数分解:

$2^1\times 5^1\times {\mathrm{619}}^1\times {\mathrm{3221}}^1$

素因数の和:3847

約数の個数: 16

約数和(自身を含む): 35957520

約数和(自身を除く): 16019530

約数列:

[1, 2, 5, 10, 619, 1238, 3095, 3221, 6190, 6442, 16105, 32210, 1993799, 3987598, 9968995, 19937990]

約数ペア:

[(1, 19937990), (2, 9968995), (5, 3987598), (10, 1993799), (619, 32210), (1238, 16105), (3095, 6442), (3221, 6190)]