21220952

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20249}}^1$

素因数の和:20386

約数の個数: 16

約数和(自身を含む): 40095000

約数和(自身を除く): 18874048

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20249, 40498, 80996, 161992, 2652619, 5305238, 10610476, 21220952]

約数ペア:

[(1, 21220952), (2, 10610476), (4, 5305238), (8, 2652619), (131, 161992), (262, 80996), (524, 40498), (1048, 20249)]