28540057

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 37044224

約数和(自身を除く): 8504167

約数列:

[1, 7, 13, 31, 67, 91, 151, 217, 403, 469, 871, 1057, 1963, 2077, 2821, 4681, 6097, 10117, 13741, 14539, 27001, 32767, 60853, 70819, 131521, 189007, 313627, 425971, 920647, 2195389, 4077151, 28540057]

約数ペア:

[(1, 28540057), (7, 4077151), (13, 2195389), (31, 920647), (67, 425971), (91, 313627), (151, 189007), (217, 131521), (403, 70819), (469, 60853), (871, 32767), (1057, 27001), (1963, 14539), (2077, 13741), (2821, 10117), (4681, 6097)]