204720016

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{19961}}^1$

素因数の和:20610

約数の個数: 20

約数和(自身を含む): 397283724

約数和(自身を除く): 192563708

約数列:

[1, 2, 4, 8, 16, 641, 1282, 2564, 5128, 10256, 19961, 39922, 79844, 159688, 319376, 12795001, 25590002, 51180004, 102360008, 204720016]

約数ペア:

[(1, 204720016), (2, 102360008), (4, 51180004), (8, 25590002), (16, 12795001), (641, 319376), (1282, 159688), (2564, 79844), (5128, 39922), (10256, 19961)]