19936390

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{19739}}^1$

素因数の和:19847

約数の個数: 16

約数和(自身を含む): 36242640

約数和(自身を除く): 16306250

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 19739, 39478, 98695, 197390, 1993639, 3987278, 9968195, 19936390]

約数ペア:

[(1, 19936390), (2, 9968195), (5, 3987278), (10, 1993639), (101, 197390), (202, 98695), (505, 39478), (1010, 19739)]