15978261

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{379}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 24514560

約数和(自身を除く): 8536299

約数列:

[1, 3, 13, 23, 39, 47, 69, 141, 299, 379, 611, 897, 1081, 1137, 1833, 3243, 4927, 8717, 14053, 14781, 17813, 26151, 42159, 53439, 113321, 231569, 339963, 409699, 694707, 1229097, 5326087, 15978261]

約数ペア:

[(1, 15978261), (3, 5326087), (13, 1229097), (23, 694707), (39, 409699), (47, 339963), (69, 231569), (141, 113321), (299, 53439), (379, 42159), (611, 26151), (897, 17813), (1081, 14781), (1137, 14053), (1833, 8717), (3243, 4927)]