31371920

素因数分解:

$2^4\times 5^1\times {\mathrm{392149}}^1$

素因数の和:392162

約数の個数: 20

約数和(自身を含む): 72939900

約数和(自身を除く): 41567980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 392149, 784298, 1568596, 1960745, 3137192, 3921490, 6274384, 7842980, 15685960, 31371920]

約数ペア:

[(1, 31371920), (2, 15685960), (4, 7842980), (5, 6274384), (8, 3921490), (10, 3137192), (16, 1960745), (20, 1568596), (40, 784298), (80, 392149)]