81491888

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{46727}}^1$

素因数の和:46844

約数の個数: 20

約数和(自身を含む): 159342480

約数和(自身を除く): 77850592

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 46727, 93454, 186908, 373816, 747632, 5093243, 10186486, 20372972, 40745944, 81491888]

約数ペア:

[(1, 81491888), (2, 40745944), (4, 20372972), (8, 10186486), (16, 5093243), (109, 747632), (218, 373816), (436, 186908), (872, 93454), (1744, 46727)]