257315373

素因数分解:

$3^5\times 7^1\times {\mathrm{151273}}^1$

素因数の和:151295

約数の個数: 24

約数和(自身を含む): 440509888

約数和(自身を除く): 183194515

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 151273, 453819, 1058911, 1361457, 3176733, 4084371, 9530199, 12253113, 28590597, 36759339, 85771791, 257315373]

約数ペア:

[(1, 257315373), (3, 85771791), (7, 36759339), (9, 28590597), (21, 12253113), (27, 9530199), (63, 4084371), (81, 3176733), (189, 1361457), (243, 1058911), (567, 453819), (1701, 151273)]