81209728

素因数分解:

$2^7\times {\mathrm{313}}^1\times {\mathrm{2027}}^1$

素因数の和:2354

約数の個数: 32

約数和(自身を含む): 162381960

約数和(自身を除く): 81172232

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 313, 626, 1252, 2027, 2504, 4054, 5008, 8108, 10016, 16216, 20032, 32432, 40064, 64864, 129728, 259456, 634451, 1268902, 2537804, 5075608, 10151216, 20302432, 40604864, 81209728]

約数ペア:

[(1, 81209728), (2, 40604864), (4, 20302432), (8, 10151216), (16, 5075608), (32, 2537804), (64, 1268902), (128, 634451), (313, 259456), (626, 129728), (1252, 64864), (2027, 40064), (2504, 32432), (4054, 20032), (5008, 16216), (8108, 10016)]