20953880

素因数分解:

$2^3\times 5^1\times {\mathrm{523847}}^1$

素因数の和:523858

約数の個数: 16

約数和(自身を含む): 47146320

約数和(自身を除く): 26192440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 523847, 1047694, 2095388, 2619235, 4190776, 5238470, 10476940, 20953880]

約数ペア:

[(1, 20953880), (2, 10476940), (4, 5238470), (5, 4190776), (8, 2619235), (10, 2095388), (20, 1047694), (40, 523847)]