21391856

素因数分解:

$2^4\times {\mathrm{347}}^1\times {\mathrm{3853}}^1$

素因数の和:4208

約数の個数: 20

約数和(自身を含む): 41576952

約数和(自身を除く): 20185096

約数列:

[1, 2, 4, 8, 16, 347, 694, 1388, 2776, 3853, 5552, 7706, 15412, 30824, 61648, 1336991, 2673982, 5347964, 10695928, 21391856]

約数ペア:

[(1, 21391856), (2, 10695928), (4, 5347964), (8, 2673982), (16, 1336991), (347, 61648), (694, 30824), (1388, 15412), (2776, 7706), (3853, 5552)]