257455583

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{3929}}^1$

素因数の和:4007

約数の個数: 32

約数和(自身を含む): 344079360

約数和(自身を除く): 86623777

約数列:

[1, 7, 11, 23, 37, 77, 161, 253, 259, 407, 851, 1771, 2849, 3929, 5957, 9361, 27503, 43219, 65527, 90367, 145373, 302533, 632569, 994037, 1017611, 1599103, 3343579, 6958259, 11193721, 23405053, 36779369, 257455583]

約数ペア:

[(1, 257455583), (7, 36779369), (11, 23405053), (23, 11193721), (37, 6958259), (77, 3343579), (161, 1599103), (253, 1017611), (259, 994037), (407, 632569), (851, 302533), (1771, 145373), (2849, 90367), (3929, 65527), (5957, 43219), (9361, 27503)]