209212144

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{20399}}^1$

素因数の和:21048

約数の個数: 20

約数和(自身を含む): 406000800

約数和(自身を除く): 196788656

約数列:

[1, 2, 4, 8, 16, 641, 1282, 2564, 5128, 10256, 20399, 40798, 81596, 163192, 326384, 13075759, 26151518, 52303036, 104606072, 209212144]

約数ペア:

[(1, 209212144), (2, 104606072), (4, 52303036), (8, 26151518), (16, 13075759), (641, 326384), (1282, 163192), (2564, 81596), (5128, 40798), (10256, 20399)]