21078040

素因数分解:

$2^3\times 5^1\times {\mathrm{526951}}^1$

素因数の和:526962

約数の個数: 16

約数和(自身を含む): 47425680

約数和(自身を除く): 26347640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 526951, 1053902, 2107804, 2634755, 4215608, 5269510, 10539020, 21078040]

約数ペア:

[(1, 21078040), (2, 10539020), (4, 5269510), (5, 4215608), (8, 2634755), (10, 2107804), (20, 1053902), (40, 526951)]