81899489

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^2$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 102993408

約数和(自身を除く): 21093919

約数列:

[1, 7, 17, 31, 119, 149, 217, 527, 1043, 2533, 3689, 4619, 17731, 22201, 32333, 78523, 155407, 377417, 549661, 688231, 2641919, 4817617, 11699927, 81899489]

約数ペア:

[(1, 81899489), (7, 11699927), (17, 4817617), (31, 2641919), (119, 688231), (149, 549661), (217, 377417), (527, 155407), (1043, 78523), (2533, 32333), (3689, 22201), (4619, 17731)]