21489256

素因数分解:

$2^3\times {\mathrm{1559}}^1\times {\mathrm{1723}}^1$

素因数の和:3288

約数の個数: 16

約数和(自身を含む): 40341600

約数和(自身を除く): 18852344

約数列:

[1, 2, 4, 8, 1559, 1723, 3118, 3446, 6236, 6892, 12472, 13784, 2686157, 5372314, 10744628, 21489256]

約数ペア:

[(1, 21489256), (2, 10744628), (4, 5372314), (8, 2686157), (1559, 13784), (1723, 12472), (3118, 6892), (3446, 6236)]