19937210

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{68749}}^1$

素因数の和:68785

約数の個数: 16

約数和(自身を含む): 37125000

約数和(自身を除く): 17187790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 68749, 137498, 343745, 687490, 1993721, 3987442, 9968605, 19937210]

約数ペア:

[(1, 19937210), (2, 9968605), (5, 3987442), (10, 1993721), (29, 687490), (58, 343745), (145, 137498), (290, 68749)]