20390170

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47419}}^1$

素因数の和:47469

約数の個数: 16

約数和(自身を含む): 37556640

約数和(自身を除く): 17166470

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 47419, 94838, 237095, 474190, 2039017, 4078034, 10195085, 20390170]

約数ペア:

[(1, 20390170), (2, 10195085), (5, 4078034), (10, 2039017), (43, 474190), (86, 237095), (215, 94838), (430, 47419)]