31215457

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 40312832

約数和(自身を除く): 9097375

約数列:

[1, 7, 13, 37, 73, 91, 127, 259, 481, 511, 889, 949, 1651, 2701, 3367, 4699, 6643, 9271, 11557, 18907, 32893, 35113, 61087, 64897, 120523, 245791, 343027, 427609, 843661, 2401189, 4459351, 31215457]

約数ペア:

[(1, 31215457), (7, 4459351), (13, 2401189), (37, 843661), (73, 427609), (91, 343027), (127, 245791), (259, 120523), (481, 64897), (511, 61087), (889, 35113), (949, 32893), (1651, 18907), (2701, 11557), (3367, 9271), (4699, 6643)]